diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0acebacf..ba28a042 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -315,10 +315,14 @@ gui/dialogs/UpdateDialog.h
 gui/dialogs/UpdateDialog.cpp
 
 # GUI - widgets
+gui/widgets/Common.h
+gui/widgets/Common.cpp
 gui/widgets/InstanceDelegate.h
 gui/widgets/InstanceDelegate.cpp
 gui/widgets/ModListView.h
 gui/widgets/ModListView.cpp
+gui/widgets/VersionListView.h
+gui/widgets/VersionListView.cpp
 gui/widgets/LabeledToolButton.h
 gui/widgets/LabeledToolButton.cpp
 gui/widgets/MCModInfoFrame.h
@@ -365,6 +369,8 @@ logic/net/PasteUpload.cpp
 logic/net/URLConstants.h
 
 # Yggdrasil login stuff
+logic/auth/AuthSession.h
+logic/auth/AuthSession.cpp
 logic/auth/MojangAccountList.h
 logic/auth/MojangAccountList.cpp
 logic/auth/MojangAccount.h
diff --git a/gui/MainWindow.cpp b/gui/MainWindow.cpp
index ee9c3fad..9977dc75 100644
--- a/gui/MainWindow.cpp
+++ b/gui/MainWindow.cpp
@@ -71,7 +71,6 @@
 
 #include "logic/auth/flows/AuthenticateTask.h"
 #include "logic/auth/flows/RefreshTask.h"
-#include "logic/auth/flows/ValidateTask.h"
 
 #include "logic/updater/DownloadUpdateTask.h"
 
@@ -132,8 +131,10 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWi
 		newsLabel->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Preferred);
 		newsLabel->setToolButtonStyle(Qt::ToolButtonTextBesideIcon);
 		ui->newsToolBar->insertWidget(ui->actionMoreNews, newsLabel);
-		QObject::connect(newsLabel, &QAbstractButton::clicked, this, &MainWindow::newsButtonClicked);
-		QObject::connect(MMC->newsChecker().get(), &NewsChecker::newsLoaded, this, &MainWindow::updateNewsLabel);
+		QObject::connect(newsLabel, &QAbstractButton::clicked, this,
+						 &MainWindow::newsButtonClicked);
+		QObject::connect(MMC->newsChecker().get(), &NewsChecker::newsLoaded, this,
+						 &MainWindow::updateNewsLabel);
 		updateNewsLabel();
 	}
 
@@ -173,8 +174,8 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWi
 		view->setModel(proxymodel);
 
 		view->setContextMenuPolicy(Qt::CustomContextMenu);
-		connect(view, SIGNAL(customContextMenuRequested(const QPoint&)),
-			this, SLOT(showInstanceContextMenu(const QPoint&)));
+		connect(view, SIGNAL(customContextMenuRequested(const QPoint &)), this,
+				SLOT(showInstanceContextMenu(const QPoint &)));
 
 		ui->horizontalLayout->addWidget(view);
 	}
@@ -213,8 +214,10 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWi
 
 	// Start status checker
 	{
-		connect(MMC->statusChecker().get(), &StatusChecker::statusLoaded, this, &MainWindow::updateStatusUI);
-		connect(MMC->statusChecker().get(), &StatusChecker::statusLoadingFailed, this, &MainWindow::updateStatusFailedUI);
+		connect(MMC->statusChecker().get(), &StatusChecker::statusLoaded, this,
+				&MainWindow::updateStatusUI);
+		connect(MMC->statusChecker().get(), &StatusChecker::statusLoadingFailed, this,
+				&MainWindow::updateStatusFailedUI);
 
 		connect(m_statusRefresh, &QAbstractButton::clicked, this, &MainWindow::reloadStatus);
 		connect(&statusTimer, &QTimer::timeout, this, &MainWindow::reloadStatus);
@@ -313,8 +316,9 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWi
 		if (MMC->settings()->get("AutoUpdate").toBool())
 			on_actionCheckUpdate_triggered();
 
-		connect(MMC->notificationChecker().get(), &NotificationChecker::notificationCheckFinished,
-				this, &MainWindow::notificationsChanged);
+		connect(MMC->notificationChecker().get(),
+				&NotificationChecker::notificationCheckFinished, this,
+				&MainWindow::notificationsChanged);
 	}
 
 	setSelectedInstanceById(MMC->settings()->get("SelectedInstance").toString());
@@ -330,9 +334,9 @@ MainWindow::~MainWindow()
 	delete drawer;
 }
 
-void MainWindow::showInstanceContextMenu(const QPoint& pos)
+void MainWindow::showInstanceContextMenu(const QPoint &pos)
 {
-	if(!view->indexAt(pos).isValid())
+	if (!view->indexAt(pos).isValid())
 	{
 		return;
 	}
@@ -522,9 +526,12 @@ static QString convertStatus(const QString &status)
 {
 	QString ret = "?";
 
-	if(status == "green") ret = "↑";
-	else if(status == "yellow") ret = "-";
-	else if(status == "red") ret="↓";
+	if (status == "green")
+		ret = "↑";
+	else if (status == "yellow")
+		ret = "-";
+	else if (status == "red")
+		ret = "↓";
 
 	return "<span style=\"font-size:11pt; font-weight:600;\">" + ret + "</span>";
 }
@@ -533,7 +540,7 @@ void MainWindow::reloadStatus()
 {
 	m_statusRefresh->setChecked(true);
 	MMC->statusChecker()->reloadStatus();
-	//updateStatusUI();
+	// updateStatusUI();
 }
 
 static QString makeStatusString(const QMap<QString, QString> statuses)
@@ -632,7 +639,8 @@ void MainWindow::notificationsChanged()
 			}
 
 			QMessageBox box(icon, tr("Notification"), entry.message, QMessageBox::Close, this);
-			QPushButton *dontShowAgainButton = box.addButton(tr("Don't show again"), QMessageBox::AcceptRole);
+			QPushButton *dontShowAgainButton =
+				box.addButton(tr("Don't show again"), QMessageBox::AcceptRole);
 			box.setDefaultButton(QMessageBox::Close);
 			box.exec();
 			if (box.clickedButton() == dontShowAgainButton)
@@ -657,9 +665,9 @@ void MainWindow::downloadUpdates(QString repo, int versionId, bool installOnExit
 	if (updateDlg.exec(&updateTask))
 	{
 		UpdateFlags baseFlags = None;
-		#ifdef MultiMC_UPDATER_DRY_RUN
-			baseFlags |= DryRun;
-		#endif
+#ifdef MultiMC_UPDATER_DRY_RUN
+		baseFlags |= DryRun;
+#endif
 		if (installOnExit)
 			MMC->installUpdates(updateTask.updateFilesDir(), baseFlags | OnExit);
 		else
@@ -751,7 +759,7 @@ void MainWindow::on_actionAddInstance_triggered()
 	if (MMC->accounts()->anyAccountIsValid())
 	{
 		ProgressDialog loadDialog(this);
-		auto update = newInstance->doUpdate(false);
+		auto update = newInstance->doUpdate();
 		connect(update.get(), &Task::failed, [this](QString reason)
 		{
 			QString error = QString("Instance load failed: %1").arg(reason);
@@ -837,7 +845,7 @@ void MainWindow::on_actionChangeInstIcon_triggered()
 
 void MainWindow::iconUpdated(QString icon)
 {
-	if(icon == m_currentInstIcon)
+	if (icon == m_currentInstIcon)
 	{
 		ui->actionChangeInstIcon->setIcon(MMC->icons()->getBigIcon(m_currentInstIcon));
 	}
@@ -860,7 +868,8 @@ void MainWindow::setSelectedInstanceById(const QString &id)
 			selectionIndex = proxymodel->mapFromSource(index);
 		}
 	}
-	view->selectionModel()->setCurrentIndex(selectionIndex, QItemSelectionModel::ClearAndSelect);
+	view->selectionModel()->setCurrentIndex(selectionIndex,
+											QItemSelectionModel::ClearAndSelect);
 }
 
 void MainWindow::on_actionChangeInstGroup_triggered()
@@ -1060,7 +1069,16 @@ void MainWindow::on_actionLaunchInstance_triggered()
 	}
 }
 
-void MainWindow::doLaunch()
+void MainWindow::on_actionLaunchInstanceOffline_triggered()
+{
+	if (m_selectedInstance)
+	{
+		NagUtils::checkJVMArgs(m_selectedInstance->settings().get("JvmArgs").toString(), this);
+		doLaunch(false);
+	}
+}
+
+void MainWindow::doLaunch(bool online)
 {
 	if (!m_selectedInstance)
 		return;
@@ -1104,89 +1122,111 @@ void MainWindow::doLaunch()
 	if (!account.get())
 		return;
 
+	// we try empty password first :)
+	QString password;
+	// we loop until the user succeeds in logging in or gives up
+	bool tryagain = true;
+	// the failure. the default failure.
 	QString failReason = tr("Your account is currently not logged in. Please enter "
 							"your password to log in again.");
-	// do the login. if the account has an access token, try to refresh it first.
-	if (account->accountStatus() != NotVerified)
-	{
-		// We'll need to validate the access token to make sure the account is still logged in.
-		ProgressDialog progDialog(this);
-		progDialog.setSkipButton(true, tr("Play Offline"));
-		auto task = account->login();
-		progDialog.exec(task.get());
 
-		auto status = account->accountStatus();
-		if (status != NotVerified)
-		{
-			updateInstance(m_selectedInstance, account);
-		}
-		else
+	while (tryagain)
+	{
+		AuthSessionPtr session(new AuthSession());
+		session->wants_online = online;
+		auto task = account->login(session, password);
+		if (task)
 		{
+			// We'll need to validate the access token to make sure the account
+			// is still logged in.
+			ProgressDialog progDialog(this);
+			if (online)
+				progDialog.setSkipButton(true, tr("Play Offline"));
+			progDialog.exec(task.get());
 			if (!task->successful())
 			{
 				failReason = task->failReason();
 			}
-			if (loginWithPassword(account, failReason))
-				updateInstance(m_selectedInstance, account);
 		}
-		// in any case, revert from online to verified.
-		account->downgrade();
-	}
-	else
-	{
-		if (loginWithPassword(account, failReason))
+		switch (session->status)
 		{
-			updateInstance(m_selectedInstance, account);
-			account->downgrade();
+		case AuthSession::Undetermined:
+		{
+			QLOG_ERROR() << "Received undetermined session status during login. Bye.";
+			tryagain = false;
+			break;
+		}
+		case AuthSession::RequiresPassword:
+		{
+			EditAccountDialog passDialog(failReason, this, EditAccountDialog::PasswordField);
+			if (passDialog.exec() == QDialog::Accepted)
+			{
+				password = passDialog.password();
+			}
+			else
+			{
+				tryagain = false;
+			}
+			break;
+		}
+		case AuthSession::PlayableOffline:
+		{
+			// we ask the user for a player name
+			bool ok = false;
+			QString usedname = session->player_name;
+			QString name = QInputDialog::getText(this, tr("Player name"),
+												 tr("Choose your offline mode player name."),
+												 QLineEdit::Normal, session->player_name, &ok);
+			if (!ok)
+			{
+				tryagain = false;
+				break;
+			}
+			if (name.length())
+			{
+				usedname = name;
+			}
+			session->MakeOffline(usedname);
+			// offline flavored game from here :3
+		}
+		case AuthSession::PlayableOnline:
+		{
+			// update first if the server actually responded
+			if (session->auth_server_online)
+			{
+				updateInstance(m_selectedInstance, session);
+			}
+			else
+			{
+				launchInstance(m_selectedInstance, session);
+			}
+			tryagain = false;
+		}
 		}
-		// in any case, revert from online to verified.
-		account->downgrade();
 	}
 }
 
-bool MainWindow::loginWithPassword(MojangAccountPtr account, const QString &errorMsg)
+void MainWindow::updateInstance(BaseInstance *instance, AuthSessionPtr session)
 {
-	EditAccountDialog passDialog(errorMsg, this, EditAccountDialog::PasswordField);
-	if (passDialog.exec() == QDialog::Accepted)
-	{
-		// To refresh the token, we just create an authenticate task with the given account and
-		// the user's password.
-		ProgressDialog progDialog(this);
-		auto task = account->login(passDialog.password());
-		progDialog.exec(task.get());
-		if (task->successful())
-			return true;
-		else
-		{
-			// If the authentication task failed, recurse with the task's error message.
-			return loginWithPassword(account, task->failReason());
-		}
-	}
-	return false;
-}
-
-void MainWindow::updateInstance(BaseInstance *instance, MojangAccountPtr account)
-{
-	bool only_prepare = account->accountStatus() != Online;
-	auto updateTask = instance->doUpdate(only_prepare);
+	auto updateTask = instance->doUpdate();
 	if (!updateTask)
 	{
-		launchInstance(instance, account);
+		launchInstance(instance, session);
 		return;
 	}
 	ProgressDialog tDialog(this);
-	connect(updateTask.get(), &Task::succeeded, [this, instance, account]
-	{ launchInstance(instance, account); });
+	connect(updateTask.get(), &Task::succeeded, [this, instance, session]
+	{ launchInstance(instance, session); });
 	connect(updateTask.get(), SIGNAL(failed(QString)), SLOT(onGameUpdateError(QString)));
 	tDialog.exec(updateTask.get());
 }
 
-void MainWindow::launchInstance(BaseInstance *instance, MojangAccountPtr account)
+void MainWindow::launchInstance(BaseInstance *instance, AuthSessionPtr session)
 {
 	Q_ASSERT_X(instance != NULL, "launchInstance", "instance is NULL");
-	Q_ASSERT_X(account.get() != nullptr, "launchInstance", "account is NULL");
+	Q_ASSERT_X(session.get() != nullptr, "launchInstance", "session is NULL");
 
-	proc = instance->prepareForLaunch(account);
+	proc = instance->prepareForLaunch(session);
 	if (!proc)
 		return;
 
@@ -1195,7 +1235,7 @@ void MainWindow::launchInstance(BaseInstance *instance, MojangAccountPtr account
 	console = new ConsoleWindow(proc);
 	connect(console, SIGNAL(isClosing()), this, SLOT(instanceEnded()));
 
-	proc->setLogin(account);
+	proc->setLogin(session);
 	proc->launch();
 }
 
@@ -1258,7 +1298,7 @@ void MainWindow::on_actionChangeInstMCVersion_triggered()
 	VersionSelectDialog vselect(m_selectedInstance->versionList().get(),
 								tr("Change Minecraft version"), this);
 	vselect.setFilter(1, "OneSix");
-	if(!vselect.exec() || !vselect.selectedVersion())
+	if (!vselect.exec() || !vselect.selectedVersion())
 		return;
 
 	if (!MMC->accounts()->anyAccountIsValid())
@@ -1276,7 +1316,7 @@ void MainWindow::on_actionChangeInstMCVersion_triggered()
 		auto result = CustomMessageBox::selectable(
 			this, tr("Are you sure?"),
 			tr("This will remove any library/version customization you did previously. "
-				"This includes things like Forge install and similar."),
+			   "This includes things like Forge install and similar."),
 			QMessageBox::Warning, QMessageBox::Ok | QMessageBox::Abort,
 			QMessageBox::Abort)->exec();
 
@@ -1285,7 +1325,7 @@ void MainWindow::on_actionChangeInstMCVersion_triggered()
 	}
 	m_selectedInstance->setIntendedVersionId(vselect.selectedVersion()->descriptor());
 
-	auto updateTask = m_selectedInstance->doUpdate(false);
+	auto updateTask = m_selectedInstance->doUpdate();
 	if (!updateTask)
 	{
 		return;
@@ -1384,7 +1424,7 @@ void MainWindow::instanceEnded()
 void MainWindow::checkMigrateLegacyAssets()
 {
 	int legacyAssets = AssetsUtils::findLegacyAssets();
-	if(legacyAssets > 0)
+	if (legacyAssets > 0)
 	{
 		ProgressDialog migrateDlg(this);
 		AssetsMigrateTask migrateTask(legacyAssets, &migrateDlg);
diff --git a/gui/MainWindow.h b/gui/MainWindow.h
index eb478776..eeba2c26 100644
--- a/gui/MainWindow.h
+++ b/gui/MainWindow.h
@@ -96,6 +96,8 @@ slots:
 
 	void on_actionLaunchInstance_triggered();
 
+	void on_actionLaunchInstanceOffline_triggered();
+
 	void on_actionDeleteInstance_triggered();
 
 	void on_actionRenameInstance_triggered();
@@ -112,25 +114,18 @@ slots:
 	 * Launches the currently selected instance with the default account.
 	 * If no default account is selected, prompts the user to pick an account.
 	 */
-	void doLaunch();
-
-	/*!
-	 * Opens an input dialog, allowing the user to input their password and refresh its access token.
-	 * This function will execute the proper Yggdrasil task to refresh the access token.
-	 * Returns true if successful. False if the user cancelled.
-	 */
-	bool loginWithPassword(MojangAccountPtr account, const QString& errorMsg="");
+	void doLaunch(bool online = true);
 
 	/*!
 	 * Launches the given instance with the given account.
 	 * This function assumes that the given account has a valid, usable access token.
 	 */
-	void launchInstance(BaseInstance* instance, MojangAccountPtr account);
+	void launchInstance(BaseInstance *instance, AuthSessionPtr session);
 
 	/*!
 	 * Prepares the given instance for launch with the given account.
 	 */
-	void updateInstance(BaseInstance* instance, MojangAccountPtr account);
+	void updateInstance(BaseInstance *instance, AuthSessionPtr account);
 
 	void onGameUpdateError(QString error);
 
diff --git a/gui/MainWindow.ui b/gui/MainWindow.ui
index 25af6f60..8cf26d18 100644
--- a/gui/MainWindow.ui
+++ b/gui/MainWindow.ui
@@ -6,8 +6,8 @@
    <rect>
     <x>0</x>
     <y>0</y>
-    <width>688</width>
-    <height>460</height>
+    <width>694</width>
+    <height>563</height>
    </rect>
   </property>
   <property name="windowTitle">
@@ -107,6 +107,7 @@
    </attribute>
    <addaction name="actionChangeInstIcon"/>
    <addaction name="actionLaunchInstance"/>
+   <addaction name="actionLaunchInstanceOffline"/>
    <addaction name="separator"/>
    <addaction name="actionEditInstNotes"/>
    <addaction name="actionChangeInstGroup"/>
@@ -152,7 +153,9 @@
   </widget>
   <action name="actionAddInstance">
    <property name="icon">
-    <iconset theme="new"/>
+    <iconset theme="new">
+     <normaloff/>
+    </iconset>
    </property>
    <property name="text">
     <string>Add Instance</string>
@@ -166,7 +169,9 @@
   </action>
   <action name="actionViewInstanceFolder">
    <property name="icon">
-    <iconset theme="viewfolder"/>
+    <iconset theme="viewfolder">
+     <normaloff/>
+    </iconset>
    </property>
    <property name="text">
     <string>View Instance Folder</string>
@@ -180,7 +185,9 @@
   </action>
   <action name="actionRefresh">
    <property name="icon">
-    <iconset theme="refresh"/>
+    <iconset theme="refresh">
+     <normaloff/>
+    </iconset>
    </property>
    <property name="text">
     <string>Refresh</string>
@@ -194,7 +201,9 @@
   </action>
   <action name="actionViewCentralModsFolder">
    <property name="icon">
-    <iconset theme="centralmods"/>
+    <iconset theme="centralmods">
+     <normaloff/>
+    </iconset>
    </property>
    <property name="text">
     <string>View Central Mods Folder</string>
@@ -208,7 +217,9 @@
   </action>
   <action name="actionCheckUpdate">
    <property name="icon">
-    <iconset theme="checkupdate"/>
+    <iconset theme="checkupdate">
+     <normaloff/>
+    </iconset>
    </property>
    <property name="text">
     <string>Check for Updates</string>
@@ -222,7 +233,9 @@
   </action>
   <action name="actionSettings">
    <property name="icon">
-    <iconset theme="settings"/>
+    <iconset theme="settings">
+     <normaloff/>
+    </iconset>
    </property>
    <property name="text">
     <string>Settings</string>
@@ -239,7 +252,9 @@
   </action>
   <action name="actionReportBug">
    <property name="icon">
-    <iconset theme="bug"/>
+    <iconset theme="bug">
+     <normaloff/>
+    </iconset>
    </property>
    <property name="text">
     <string>Report a Bug</string>
@@ -253,7 +268,9 @@
   </action>
   <action name="actionMoreNews">
    <property name="icon">
-    <iconset theme="news"/>
+    <iconset theme="news">
+     <normaloff/>
+    </iconset>
    </property>
    <property name="text">
     <string>More News</string>
@@ -270,7 +287,9 @@
   </action>
   <action name="actionAbout">
    <property name="icon">
-    <iconset theme="about"/>
+    <iconset theme="about">
+     <normaloff/>
+    </iconset>
    </property>
    <property name="text">
     <string>About MultiMC</string>
@@ -463,7 +482,9 @@
     <bool>true</bool>
    </property>
    <property name="icon">
-    <iconset theme="cat"/>
+    <iconset theme="cat">
+     <normaloff/>
+    </iconset>
    </property>
    <property name="text">
     <string>Meow</string>
@@ -474,7 +495,9 @@
   </action>
   <action name="actionCopyInstance">
    <property name="icon">
-    <iconset theme="copy"/>
+    <iconset theme="copy">
+     <normaloff/>
+    </iconset>
    </property>
    <property name="text">
     <string>Copy Instance</string>
@@ -494,6 +517,17 @@
     <string>Manage your Mojang or Minecraft accounts.</string>
    </property>
   </action>
+  <action name="actionLaunchInstanceOffline">
+   <property name="text">
+    <string>Play Offline</string>
+   </property>
+   <property name="toolTip">
+    <string>Launch the selected instance in offline mode.</string>
+   </property>
+   <property name="statusTip">
+    <string>Launch the selected instance.</string>
+   </property>
+  </action>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <resources>
diff --git a/gui/dialogs/AccountListDialog.cpp b/gui/dialogs/AccountListDialog.cpp
index 1712e352..a38035a6 100644
--- a/gui/dialogs/AccountListDialog.cpp
+++ b/gui/dialogs/AccountListDialog.cpp
@@ -126,7 +126,7 @@ void AccountListDialog::addAccount(const QString& errMsg)
 
 		MojangAccountPtr account = MojangAccount::createFromUsername(username);
 		ProgressDialog progDialog(this);
-		auto task = account->login(password);
+		auto task = account->login(nullptr, password);
 		progDialog.exec(task.get());
 		if(task->successful())
 		{
diff --git a/gui/dialogs/OneSixModEditDialog.cpp b/gui/dialogs/OneSixModEditDialog.cpp
index ebd685e8..1742ff80 100644
--- a/gui/dialogs/OneSixModEditDialog.cpp
+++ b/gui/dialogs/OneSixModEditDialog.cpp
@@ -161,6 +161,8 @@ void OneSixModEditDialog::on_forgeBtn_clicked()
 	}
 	VersionSelectDialog vselect(MMC->forgelist().get(), tr("Select Forge version"), this);
 	vselect.setFilter(1, m_inst->currentVersionId());
+	vselect.setEmptyString(tr("No Forge versions are currently available for Minecraft ") +
+							  m_inst->currentVersionId());
 	if (vselect.exec() && vselect.selectedVersion())
 	{
 		ForgeVersionPtr forgeVersion =
@@ -224,9 +226,9 @@ void OneSixModEditDialog::on_liteloaderBtn_clicked()
 	}
 	if (!liteloader.add(m_inst))
 	{
-		QMessageBox::critical(
-			this, tr("LiteLoader"),
-			tr("For reasons unknown, the LiteLoader installation failed. Check your MultiMC log files for details."));
+		QMessageBox::critical(this, tr("LiteLoader"),
+							  tr("For reasons unknown, the LiteLoader installation failed. "
+								 "Check your MultiMC log files for details."));
 	}
 	else
 	{
diff --git a/gui/dialogs/VersionSelectDialog.cpp b/gui/dialogs/VersionSelectDialog.cpp
index d6efe3c0..0f379f56 100644
--- a/gui/dialogs/VersionSelectDialog.cpp
+++ b/gui/dialogs/VersionSelectDialog.cpp
@@ -51,6 +51,11 @@ VersionSelectDialog::VersionSelectDialog(BaseVersionList *vlist, QString title,
 	}
 }
 
+void VersionSelectDialog::setEmptyString(QString emptyString)
+{
+	ui->listView->setEmptyString(emptyString);
+}
+
 VersionSelectDialog::~VersionSelectDialog()
 {
 	delete ui;
diff --git a/gui/dialogs/VersionSelectDialog.h b/gui/dialogs/VersionSelectDialog.h
index e36341db..61fa8ab6 100644
--- a/gui/dialogs/VersionSelectDialog.h
+++ b/gui/dialogs/VersionSelectDialog.h
@@ -44,6 +44,7 @@ public:
 	BaseVersionPtr selectedVersion() const;
 
 	void setFilter(int column, QString filter);
+	void setEmptyString(QString emptyString);
 	void setResizeOn(int column);
 
 private
diff --git a/gui/dialogs/VersionSelectDialog.ui b/gui/dialogs/VersionSelectDialog.ui
index 58264f24..07e9e73e 100644
--- a/gui/dialogs/VersionSelectDialog.ui
+++ b/gui/dialogs/VersionSelectDialog.ui
@@ -15,7 +15,7 @@
   </property>
   <layout class="QVBoxLayout" name="verticalLayout">
    <item>
-    <widget class="QTreeView" name="listView">
+    <widget class="VersionListView" name="listView">
      <property name="horizontalScrollBarPolicy">
       <enum>Qt::ScrollBarAlwaysOff</enum>
      </property>
@@ -65,6 +65,13 @@
    </item>
   </layout>
  </widget>
+ <customwidgets>
+  <customwidget>
+   <class>VersionListView</class>
+   <extends>QTreeView</extends>
+   <header>gui/widgets/VersionListView.h</header>
+  </customwidget>
+ </customwidgets>
  <resources/>
  <connections>
   <connection>
diff --git a/gui/widgets/Common.cpp b/gui/widgets/Common.cpp
new file mode 100644
index 00000000..9b730d6c
--- /dev/null
+++ b/gui/widgets/Common.cpp
@@ -0,0 +1,27 @@
+#include "Common.h"
+
+// Origin: Qt
+QStringList viewItemTextLayout(QTextLayout &textLayout, int lineWidth, qreal &height,
+							   qreal &widthUsed)
+{
+	QStringList lines;
+	height = 0;
+	widthUsed = 0;
+	textLayout.beginLayout();
+	QString str = textLayout.text();
+	while (true)
+	{
+		QTextLine line = textLayout.createLine();
+		if (!line.isValid())
+			break;
+		if (line.textLength() == 0)
+			break;
+		line.setLineWidth(lineWidth);
+		line.setPosition(QPointF(0, height));
+		height += line.height();
+		lines.append(str.mid(line.textStart(), line.textLength()));
+		widthUsed = qMax(widthUsed, line.naturalTextWidth());
+	}
+	textLayout.endLayout();
+	return lines;
+}
diff --git a/gui/widgets/Common.h b/gui/widgets/Common.h
new file mode 100644
index 00000000..fc46e08f
--- /dev/null
+++ b/gui/widgets/Common.h
@@ -0,0 +1,6 @@
+#pragma once
+#include <QStringList>
+#include <QTextLayout>
+
+QStringList viewItemTextLayout(QTextLayout &textLayout, int lineWidth, qreal &height,
+						qreal &widthUsed);
\ No newline at end of file
diff --git a/gui/widgets/InstanceDelegate.cpp b/gui/widgets/InstanceDelegate.cpp
index 5020b8b6..33da7130 100644
--- a/gui/widgets/InstanceDelegate.cpp
+++ b/gui/widgets/InstanceDelegate.cpp
@@ -19,30 +19,7 @@
 #include <QTextLayout>
 #include <QApplication>
 #include <QtCore/qmath.h>
-
-// Origin: Qt
-static void viewItemTextLayout(QTextLayout &textLayout, int lineWidth, qreal &height,
-							   qreal &widthUsed)
-{
-	height = 0;
-	widthUsed = 0;
-	textLayout.beginLayout();
-	QString str = textLayout.text();
-	while (true)
-	{
-		QTextLine line = textLayout.createLine();
-		if (!line.isValid())
-			break;
-		if (line.textLength() == 0)
-			break;
-		line.setLineWidth(lineWidth);
-		line.setPosition(QPointF(0, height));
-		height += line.height();
-		widthUsed = qMax(widthUsed, line.naturalTextWidth());
-	}
-	textLayout.endLayout();
-}
-
+#include "Common.h"
 #define QFIXED_MAX (INT_MAX / 256)
 
 ListViewDelegate::ListViewDelegate(QObject *parent) : QStyledItemDelegate(parent)
diff --git a/gui/widgets/VersionListView.cpp b/gui/widgets/VersionListView.cpp
new file mode 100644
index 00000000..b7f45f27
--- /dev/null
+++ b/gui/widgets/VersionListView.cpp
@@ -0,0 +1,150 @@
+/* Copyright 2013 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <QHeaderView>
+#include <QApplication>
+#include <QMouseEvent>
+#include <QDrag>
+#include <QPainter>
+#include "VersionListView.h"
+#include "Common.h"
+
+VersionListView::VersionListView(QWidget *parent)
+	:QTreeView ( parent )
+{
+	m_emptyString = tr("No versions are currently available.");
+}
+
+void VersionListView::rowsInserted(const QModelIndex &parent, int start, int end)
+{
+	if(!m_itemCount)
+		viewport()->update();
+	m_itemCount += end-start+1;
+	QTreeView::rowsInserted(parent, start, end);
+}
+
+
+void VersionListView::rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end)
+{
+	m_itemCount -= end-start+1;
+	if(!m_itemCount)
+		viewport()->update();
+	QTreeView::rowsInserted(parent, start, end);
+}
+
+void VersionListView::setModel(QAbstractItemModel *model)
+{
+	m_itemCount = model->rowCount();
+	if(!m_itemCount)
+		viewport()->update();
+	QTreeView::setModel(model);
+}
+
+void VersionListView::reset()
+{
+	if(model())
+	{
+		m_itemCount = model()->rowCount();
+	}
+	viewport()->update();
+	QTreeView::reset();
+}
+
+void VersionListView::setEmptyString(QString emptyString)
+{
+	m_emptyString = emptyString;
+	if(!m_itemCount)
+	{
+		viewport()->update();
+	}
+}
+
+void VersionListView::paintEvent(QPaintEvent *event)
+{
+	if(m_itemCount)
+	{
+		QTreeView::paintEvent(event);
+	}
+	else
+	{
+		paintInfoLabel(event);
+	}
+}
+
+void VersionListView::paintInfoLabel(QPaintEvent *event)
+{
+	int scrollInterval = 500;
+
+    //calculate the rect for the overlay
+    QPainter painter(viewport());
+    painter.setRenderHint(QPainter::Antialiasing, true);
+    const QChar letter = 'Q';
+	QFont font("sans", 20);
+    font.setBold(true);
+	
+	QRect bounds = viewport()->geometry();
+	bounds.moveTop(0);
+	QTextLayout layout(m_emptyString, font);
+	qreal height = 0.0;
+	qreal widthUsed = 0.0;
+	QStringList lines = viewItemTextLayout(layout, bounds.width() - 20, height, widthUsed);
+	QRect rect (0,0, widthUsed, height);
+	rect.setWidth(rect.width()+20);
+	rect.setHeight(rect.height()+20);
+    rect.moveCenter(bounds.center());
+    //check if we are allowed to draw in our area
+    if (!event->rect().intersects(rect)) {
+        return;
+    }
+    //draw the letter of the topmost item semitransparent in the middle
+    QColor background = QApplication::palette().color(QPalette::Foreground);
+    QColor foreground = QApplication::palette().color(QPalette::Base);
+	/*
+    background.setAlpha(128 - scrollFade);
+    foreground.setAlpha(128 - scrollFade);
+    */
+    painter.setBrush(QBrush(background));
+    painter.setPen(foreground);
+    painter.drawRoundedRect(rect, 5.0, 5.0);
+    foreground.setAlpha(190);
+    painter.setPen(foreground);
+    painter.setFont(font);
+    painter.drawText(rect, Qt::AlignCenter, lines.join("\n"));
+	
+}
+
+/*
+void ModListView::setModel ( QAbstractItemModel* model )
+{
+	QTreeView::setModel ( model );
+	auto head = header();
+	head->setStretchLastSection(false);
+	// HACK: this is true for the checkbox column of mod lists
+	auto string = model->headerData(0,head->orientation()).toString();
+	if(!string.size())
+	{
+		head->setSectionResizeMode(0, QHeaderView::ResizeToContents);
+		head->setSectionResizeMode(1, QHeaderView::Stretch);
+		for(int i = 2; i < head->count(); i++)
+			head->setSectionResizeMode(i, QHeaderView::ResizeToContents);
+	}
+	else
+	{
+		head->setSectionResizeMode(0, QHeaderView::Stretch);
+		for(int i = 1; i < head->count(); i++)
+			head->setSectionResizeMode(i, QHeaderView::ResizeToContents);
+	}
+}
+*/
\ No newline at end of file
diff --git a/gui/widgets/VersionListView.h b/gui/widgets/VersionListView.h
new file mode 100644
index 00000000..af9b1f6a
--- /dev/null
+++ b/gui/widgets/VersionListView.h
@@ -0,0 +1,43 @@
+/* Copyright 2013 MultiMC Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+#include <QTreeView>
+
+class Mod;
+
+class VersionListView : public QTreeView
+{
+	Q_OBJECT
+public:
+	explicit VersionListView(QWidget *parent = 0);
+	virtual void paintEvent(QPaintEvent *event) override;
+	void setEmptyString(QString emptyString);
+	virtual void setModel ( QAbstractItemModel* model );
+
+public slots:
+	virtual void reset() override;
+
+protected slots:
+	virtual void rowsAboutToBeRemoved(const QModelIndex & parent, int start, int end) override;
+	virtual void rowsInserted(const QModelIndex &parent, int start, int end) override;
+
+private: /* methods */
+	void paintInfoLabel(QPaintEvent *event);
+
+private: /* variables */
+	int m_itemCount = 0;
+	QString m_emptyString;
+};
diff --git a/logic/BaseInstance.h b/logic/BaseInstance.h
index a861e9b2..cd49f99b 100644
--- a/logic/BaseInstance.h
+++ b/logic/BaseInstance.h
@@ -155,10 +155,10 @@ public:
 	virtual SettingsObject &settings() const;
 
 	/// returns a valid update task
-	virtual std::shared_ptr<Task> doUpdate(bool only_prepare) = 0;
+	virtual std::shared_ptr<Task> doUpdate() = 0;
 
 	/// returns a valid minecraft process, ready for launch with the given account.
-	virtual MinecraftProcess *prepareForLaunch(MojangAccountPtr account) = 0;
+	virtual MinecraftProcess *prepareForLaunch(AuthSessionPtr account) = 0;
 
 	/// do any necessary cleanups after the instance finishes. also runs before
 	/// 'prepareForLaunch'
diff --git a/logic/LegacyInstance.cpp b/logic/LegacyInstance.cpp
index 2828bcbf..a9f0d112 100644
--- a/logic/LegacyInstance.cpp
+++ b/logic/LegacyInstance.cpp
@@ -42,15 +42,15 @@ LegacyInstance::LegacyInstance(const QString &rootDir, SettingsObject *settings,
 	settings->registerSetting("IntendedJarVersion", "");
 }
 
-std::shared_ptr<Task> LegacyInstance::doUpdate(bool only_prepare)
+std::shared_ptr<Task> LegacyInstance::doUpdate()
 {
 	// make sure the jar mods list is initialized by asking for it.
 	auto list = jarModList();
 	// create an update task
-	return std::shared_ptr<Task>(new LegacyUpdate(this, only_prepare, this));
+	return std::shared_ptr<Task>(new LegacyUpdate(this, this));
 }
 
-MinecraftProcess *LegacyInstance::prepareForLaunch(MojangAccountPtr account)
+MinecraftProcess *LegacyInstance::prepareForLaunch(AuthSessionPtr account)
 {
 	MinecraftProcess *proc = new MinecraftProcess(this);
 
@@ -66,13 +66,14 @@ MinecraftProcess *LegacyInstance::prepareForLaunch(MojangAccountPtr account)
 		if (settings().get("LaunchMaximized").toBool())
 			windowParams = "max";
 		else
-			windowParams = QString("%1x%2").arg(settings().get("MinecraftWinWidth").toInt()).arg(
-				settings().get("MinecraftWinHeight").toInt());
+			windowParams = QString("%1x%2")
+							   .arg(settings().get("MinecraftWinWidth").toInt())
+							   .arg(settings().get("MinecraftWinHeight").toInt());
 
 		QString lwjgl = QDir(MMC->settings()->get("LWJGLDir").toString() + "/" + lwjglVersion())
 							.absolutePath();
-		launchScript += "userName " + account->currentProfile()->name + "\n";
-		launchScript += "sessionId " + account->sessionId() + "\n";
+		launchScript += "userName " + account->player_name + "\n";
+		launchScript += "sessionId " + account->session + "\n";
 		launchScript += "windowTitle " + windowTitle() + "\n";
 		launchScript += "windowParams " + windowParams + "\n";
 		launchScript += "lwjgl " + lwjgl + "\n";
diff --git a/logic/LegacyInstance.h b/logic/LegacyInstance.h
index 1e7d9eb6..636addeb 100644
--- a/logic/LegacyInstance.h
+++ b/logic/LegacyInstance.h
@@ -76,9 +76,9 @@ public:
 
 	virtual bool shouldUpdate() const override;
 	virtual void setShouldUpdate(bool val) override;
-	virtual std::shared_ptr<Task> doUpdate(bool only_prepare) override;
+	virtual std::shared_ptr<Task> doUpdate() override;
 
-	virtual MinecraftProcess *prepareForLaunch(MojangAccountPtr account) override;
+	virtual MinecraftProcess *prepareForLaunch(AuthSessionPtr account) override;
 	virtual void cleanupAfterRun() override;
 	virtual QDialog *createModEditDialog(QWidget *parent) override;
 
diff --git a/logic/LegacyUpdate.cpp b/logic/LegacyUpdate.cpp
index cb3598a7..5d82a76b 100644
--- a/logic/LegacyUpdate.cpp
+++ b/logic/LegacyUpdate.cpp
@@ -27,13 +27,13 @@
 #include "logger/QsLog.h"
 #include "logic/net/URLConstants.h"
 
-LegacyUpdate::LegacyUpdate(BaseInstance *inst, bool only_prepare, QObject *parent)
-	: Task(parent), m_inst(inst), m_only_prepare(only_prepare)
+LegacyUpdate::LegacyUpdate(BaseInstance *inst, QObject *parent) : Task(parent), m_inst(inst)
 {
 }
 
 void LegacyUpdate::executeTask()
 {
+	/*
 	if(m_only_prepare)
 	{
 		// FIXME: think this through some more.
@@ -49,8 +49,9 @@ void LegacyUpdate::executeTask()
 	}
 	else
 	{
-		lwjglStart();
-	}
+		*/
+	lwjglStart();
+	//}
 }
 
 void LegacyUpdate::lwjglStart()
@@ -268,7 +269,6 @@ void LegacyUpdate::jarStart()
 
 	auto dljob = new NetJob("Minecraft.jar for version " + version_id);
 
-
 	auto metacache = MMC->metacache();
 	auto entry = metacache->resolveEntry("versions", localPath);
 	dljob->addNetAction(CacheDownload::make(QUrl(urlstr), entry));
@@ -425,7 +425,7 @@ void LegacyUpdate::ModTheJar()
 		auto &mod = modList->operator[](i);
 
 		// do not merge disabled mods.
-		if(!mod.enabled())
+		if (!mod.enabled())
 			continue;
 
 		if (mod.type() == Mod::MOD_ZIPFILE)
diff --git a/logic/LegacyUpdate.h b/logic/LegacyUpdate.h
index 0b573ca5..613eb1f9 100644
--- a/logic/LegacyUpdate.h
+++ b/logic/LegacyUpdate.h
@@ -31,7 +31,7 @@ class LegacyUpdate : public Task
 {
 	Q_OBJECT
 public:
-	explicit LegacyUpdate(BaseInstance *inst, bool only_prepare, QObject *parent = 0);
+	explicit LegacyUpdate(BaseInstance *inst, QObject *parent = 0);
 	virtual void executeTask();
 
 private
@@ -72,5 +72,4 @@ private:
 private:
 	NetJobPtr legacyDownloadJob;
 	BaseInstance *m_inst = nullptr;
-	bool m_only_prepare = false;
 };
diff --git a/logic/MinecraftProcess.cpp b/logic/MinecraftProcess.cpp
index 84610021..9c0a7074 100644
--- a/logic/MinecraftProcess.cpp
+++ b/logic/MinecraftProcess.cpp
@@ -79,26 +79,18 @@ void MinecraftProcess::setWorkdir(QString path)
 
 QString MinecraftProcess::censorPrivateInfo(QString in)
 {
-	if(!m_account)
+	if(!m_session)
 		return in;
 
-	QString sessionId = m_account->sessionId();
-	QString accessToken = m_account->accessToken();
-	QString clientToken = m_account->clientToken();
-	in.replace(sessionId, "<SESSION ID>");
-	in.replace(accessToken, "<ACCESS TOKEN>");
-	in.replace(clientToken, "<CLIENT TOKEN>");
-	auto profile = m_account->currentProfile();
-	if(profile)
-	{
-		QString profileId = profile->id;
-		QString profileName = profile->name;
-		in.replace(profileId, "<PROFILE ID>");
-		in.replace(profileName, "<PROFILE NAME>");
-	}
+	if(m_session->session != "-")
+		in.replace(m_session->session, "<SESSION ID>");
+	in.replace(m_session->access_token, "<ACCESS TOKEN>");
+	in.replace(m_session->client_token, "<CLIENT TOKEN>");
+	in.replace(m_session->uuid, "<PROFILE ID>");
+	in.replace(m_session->player_name, "<PROFILE NAME>");
 
-	auto i = m_account->user().properties.begin();
-	while (i != m_account->user().properties.end())
+	auto i = m_session->u.properties.begin();
+	while (i != m_session->u.properties.end())
 	{
 		in.replace(i.value(), "<" + i.key().toUpper() + ">");
 		++i;
diff --git a/logic/MinecraftProcess.h b/logic/MinecraftProcess.h
index 70e5df52..26214026 100644
--- a/logic/MinecraftProcess.h
+++ b/logic/MinecraftProcess.h
@@ -78,9 +78,9 @@ public:
 
 	void killMinecraft();
 
-	inline void setLogin(MojangAccountPtr account)
+	inline void setLogin(AuthSessionPtr session)
 	{
-		m_account = account;
+		m_session = session;
 	}
 
 signals:
@@ -117,7 +117,7 @@ protected:
 	QString m_out_leftover;
 	QProcess m_prepostlaunchprocess;
 	bool killed = false;
-	MojangAccountPtr m_account;
+	AuthSessionPtr m_session;
 	QString launchScript;
 	QString m_nativeFolder;
 
diff --git a/logic/OneSixFTBInstance.cpp b/logic/OneSixFTBInstance.cpp
index 54bfbe2b..ca88142a 100644
--- a/logic/OneSixFTBInstance.cpp
+++ b/logic/OneSixFTBInstance.cpp
@@ -104,7 +104,7 @@ bool OneSixFTBInstance::menuActionEnabled(QString action_name) const
 	return false;
 }
 
-std::shared_ptr<Task> OneSixFTBInstance::doUpdate(bool only_prepare)
+std::shared_ptr<Task> OneSixFTBInstance::doUpdate()
 {
 	std::shared_ptr<SequentialTask> task;
 	task.reset(new SequentialTask(this));
@@ -112,11 +112,11 @@ std::shared_ptr<Task> OneSixFTBInstance::doUpdate(bool only_prepare)
 	{
 		task->addTask(std::shared_ptr<Task>(MMC->forgelist()->getLoadTask()));
 	}
-	task->addTask(OneSixInstance::doUpdate(only_prepare));
+	task->addTask(OneSixInstance::doUpdate());
 	task->addTask(std::shared_ptr<Task>(new OneSixFTBInstanceForge(m_forge->version(), this, this)));
 	//FIXME: yes. this may appear dumb. but the previous step can change the list, so we do it all again.
 	//TODO: Add a graph task. Construct graphs of tasks so we may capture the logic properly.
-	task->addTask(OneSixInstance::doUpdate(only_prepare));
+	task->addTask(OneSixInstance::doUpdate());
 	return task;
 }
 
diff --git a/logic/OneSixFTBInstance.h b/logic/OneSixFTBInstance.h
index dc028819..bc543aeb 100644
--- a/logic/OneSixFTBInstance.h
+++ b/logic/OneSixFTBInstance.h
@@ -13,7 +13,7 @@ public:
 	virtual QString getStatusbarDescription();
 	virtual bool menuActionEnabled(QString action_name) const;
 
-	virtual std::shared_ptr<Task> doUpdate(bool only_prepare) override;
+	virtual std::shared_ptr<Task> doUpdate() override;
 
 	virtual QString id() const;
 
diff --git a/logic/OneSixInstance.cpp b/logic/OneSixInstance.cpp
index 88c40316..8ecbe7a0 100644
--- a/logic/OneSixInstance.cpp
+++ b/logic/OneSixInstance.cpp
@@ -46,9 +46,9 @@ OneSixInstance::OneSixInstance(const QString &rootDir, SettingsObject *settings,
 	}
 }
 
-std::shared_ptr<Task> OneSixInstance::doUpdate(bool only_prepare)
+std::shared_ptr<Task> OneSixInstance::doUpdate()
 {
-	return std::shared_ptr<Task>(new OneSixUpdate(this, only_prepare));
+	return std::shared_ptr<Task>(new OneSixUpdate(this));
 }
 
 QString replaceTokensIn(QString text, QMap<QString, QString> with)
@@ -135,7 +135,7 @@ QDir OneSixInstance::reconstructAssets(std::shared_ptr<OneSixVersion> version)
 	return virtualRoot;
 }
 
-QStringList OneSixInstance::processMinecraftArgs(MojangAccountPtr account)
+QStringList OneSixInstance::processMinecraftArgs(AuthSessionPtr session)
 {
 	I_D(OneSixInstance);
 	auto version = d->version;
@@ -147,17 +147,11 @@ QStringList OneSixInstance::processMinecraftArgs(MojangAccountPtr account)
 
 	QMap<QString, QString> token_mapping;
 	// yggdrasil!
-	token_mapping["auth_username"] = account->username();
-	token_mapping["auth_session"] = account->sessionId();
-	token_mapping["auth_access_token"] = account->accessToken();
-	token_mapping["auth_player_name"] = account->currentProfile()->name;
-	token_mapping["auth_uuid"] = account->currentProfile()->id;
-
-	// this is for offline?:
-	/*
-	map["auth_player_name"] = "Player";
-	map["auth_player_name"] = "00000000-0000-0000-0000-000000000000";
-	*/
+	token_mapping["auth_username"] = session->username;
+	token_mapping["auth_session"] = session->session;
+	token_mapping["auth_access_token"] = session->access_token;
+	token_mapping["auth_player_name"] = session->player_name;
+	token_mapping["auth_uuid"] = session->uuid;
 
 	// these do nothing and are stupid.
 	token_mapping["profile_name"] = name();
@@ -168,17 +162,8 @@ QStringList OneSixInstance::processMinecraftArgs(MojangAccountPtr account)
 	QString absAssetsDir = QDir("assets/").absolutePath();
 	token_mapping["game_assets"] = reconstructAssets(d->version).absolutePath();
 
-	auto user = account->user();
-	QJsonObject userAttrs;
-	for (auto key : user.properties.keys())
-	{
-		auto array = QJsonArray::fromStringList(user.properties.values(key));
-		userAttrs.insert(key, array);
-	}
-	QJsonDocument value(userAttrs);
-
-	token_mapping["user_properties"] = value.toJson(QJsonDocument::Compact);
-	token_mapping["user_type"] = account->currentProfile()->legacy ? "legacy" : "mojang";
+	token_mapping["user_properties"] = session->serializeUserProperties();
+	token_mapping["user_type"] = session->user_type;
 	// 1.7.3+ assets tokens
 	token_mapping["assets_root"] = absAssetsDir;
 	token_mapping["assets_index_name"] = version->assets;
@@ -191,7 +176,7 @@ QStringList OneSixInstance::processMinecraftArgs(MojangAccountPtr account)
 	return parts;
 }
 
-MinecraftProcess *OneSixInstance::prepareForLaunch(MojangAccountPtr account)
+MinecraftProcess *OneSixInstance::prepareForLaunch(AuthSessionPtr session)
 {
 	I_D(OneSixInstance);
 
@@ -216,7 +201,7 @@ MinecraftProcess *OneSixInstance::prepareForLaunch(MojangAccountPtr account)
 	}
 	launchScript += "mainClass " + version->mainClass + "\n";
 
-	for (auto param : processMinecraftArgs(account))
+	for (auto param : processMinecraftArgs(session))
 	{
 		launchScript += "param " + param + "\n";
 	}
diff --git a/logic/OneSixInstance.h b/logic/OneSixInstance.h
index ee64e886..5aa12e44 100644
--- a/logic/OneSixInstance.h
+++ b/logic/OneSixInstance.h
@@ -36,8 +36,8 @@ public:
 	QString loaderModsDir() const;
 	virtual QString instanceConfigFolder() const override;
 
-	virtual std::shared_ptr<Task> doUpdate(bool only_prepare) override;
-	virtual MinecraftProcess *prepareForLaunch(MojangAccountPtr account) override;
+	virtual std::shared_ptr<Task> doUpdate() override;
+	virtual MinecraftProcess *prepareForLaunch(AuthSessionPtr session) override;
 
 	virtual void cleanupAfterRun() override;
 
@@ -72,6 +72,6 @@ signals:
 	void versionReloaded();
 
 private:
-	QStringList processMinecraftArgs(MojangAccountPtr account);
+	QStringList processMinecraftArgs(AuthSessionPtr account);
 	QDir reconstructAssets(std::shared_ptr<OneSixVersion> version);
 };
diff --git a/logic/OneSixUpdate.cpp b/logic/OneSixUpdate.cpp
index c056bc4c..d3ac80c2 100644
--- a/logic/OneSixUpdate.cpp
+++ b/logic/OneSixUpdate.cpp
@@ -35,8 +35,8 @@
 #include "pathutils.h"
 #include <JlCompress.h>
 
-OneSixUpdate::OneSixUpdate(BaseInstance *inst, bool only_prepare, QObject *parent)
-	: Task(parent), m_inst(inst), m_only_prepare(only_prepare)
+OneSixUpdate::OneSixUpdate(BaseInstance *inst, QObject *parent)
+	: Task(parent), m_inst(inst)
 {
 }
 
@@ -52,12 +52,6 @@ void OneSixUpdate::executeTask()
 		return;
 	}
 
-	if (m_only_prepare)
-	{
-		prepareForLaunch();
-		return;
-	}
-
 	if (m_inst->shouldUpdate())
 	{
 		// Get a pointer to the version object that corresponds to the instance's version.
@@ -222,7 +216,7 @@ void OneSixUpdate::assetIndexFailed()
 
 void OneSixUpdate::assetsFinished()
 {
-	prepareForLaunch();
+	emitSucceeded();
 }
 
 void OneSixUpdate::assetsFailed()
@@ -330,43 +324,3 @@ void OneSixUpdate::jarlibFailed()
 	emitFailed("Failed to download the following files:\n" + failed_all +
 			   "\n\nPlease try again.");
 }
-
-void OneSixUpdate::prepareForLaunch()
-{
-	setStatus(tr("Preparing for launch..."));
-	QLOG_INFO() << m_inst->name() << ": preparing for launch";
-	auto OneSix_inst = (OneSixInstance *)m_inst;
-
-	// delete any leftovers, if they are present.
-	OneSix_inst->cleanupAfterRun();
-
-	QString natives_dir_raw = PathCombine(OneSix_inst->instanceRoot(), "natives/");
-	auto version = OneSix_inst->getFullVersion();
-	if (!version)
-	{
-		emitFailed("The version information for this instance is not complete. Try re-creating "
-				   "it or changing the version.");
-		return;
-	}
-	/*
-	for (auto lib : version->getActiveNativeLibs())
-	{
-		if (!lib->filesExist())
-		{
-			emitFailed("Native library is missing some files:\n" + lib->storagePath() +
-					   "\n\nRun the instance at least once in online mode to get all the "
-					   "required files.");
-			return;
-		}
-		if (!lib->extractTo(natives_dir_raw))
-		{
-			emitFailed("Could not extract the native library:\n" + lib->storagePath() + " to " +
-					   natives_dir_raw +
-					   "\n\nMake sure MultiMC has appropriate permissions and there is enough "
-					   "space on the storage device.");
-			return;
-		}
-	}
-*/
-	emitSucceeded();
-}
diff --git a/logic/OneSixUpdate.h b/logic/OneSixUpdate.h
index bc717a94..3c18211e 100644
--- a/logic/OneSixUpdate.h
+++ b/logic/OneSixUpdate.h
@@ -29,7 +29,7 @@ class OneSixUpdate : public Task
 {
 	Q_OBJECT
 public:
-	explicit OneSixUpdate(BaseInstance *inst, bool prepare_for_launch, QObject *parent = 0);
+	explicit OneSixUpdate(BaseInstance *inst, QObject *parent = 0);
 	virtual void executeTask();
 
 private
@@ -49,9 +49,6 @@ slots:
 	void assetsFinished();
 	void assetsFailed();
 
-	// extract the appropriate libraries
-	void prepareForLaunch();
-
 private:
 	NetJobPtr specificVersionDownloadJob;
 	NetJobPtr jarlibDownloadJob;
@@ -59,5 +56,4 @@ private:
 	// target version, determined during this task
 	std::shared_ptr<MinecraftVersion> targetVersion;
 	BaseInstance *m_inst = nullptr;
-	bool m_only_prepare = false;
 };
diff --git a/logic/auth/AuthSession.cpp b/logic/auth/AuthSession.cpp
new file mode 100644
index 00000000..8758bfbd
--- /dev/null
+++ b/logic/auth/AuthSession.cpp
@@ -0,0 +1,30 @@
+#include "AuthSession.h"
+#include <QJsonObject>
+#include <QJsonArray>
+#include <QJsonDocument>
+#include <QStringList>
+
+QString AuthSession::serializeUserProperties()
+{
+	QJsonObject userAttrs;
+	for (auto key : u.properties.keys())
+	{
+		auto array = QJsonArray::fromStringList(u.properties.values(key));
+		userAttrs.insert(key, array);
+	}
+	QJsonDocument value(userAttrs);
+	return value.toJson(QJsonDocument::Compact);
+
+}
+
+bool AuthSession::MakeOffline(QString offline_playername)
+{
+	if (status != PlayableOffline && status != PlayableOnline)
+	{
+		return false;
+	}
+	session = "-";
+	player_name = offline_playername;
+	status = PlayableOffline;
+	return true;
+}
diff --git a/logic/auth/AuthSession.h b/logic/auth/AuthSession.h
new file mode 100644
index 00000000..2ac170fa
--- /dev/null
+++ b/logic/auth/AuthSession.h
@@ -0,0 +1,49 @@
+#pragma once
+
+#include <QString>
+#include <QMultiMap>
+#include <memory>
+
+struct User
+{
+	QString id;
+	QMultiMap<QString, QString> properties;
+};
+
+struct AuthSession
+{
+	bool MakeOffline(QString offline_playername);
+
+	QString serializeUserProperties();
+
+	enum Status
+	{
+		Undetermined,
+		RequiresPassword,
+		PlayableOffline,
+		PlayableOnline
+	} status = Undetermined;
+
+	User u;
+
+	// client token
+	QString client_token;
+	// account user name
+	QString username;
+	// combined session ID
+	QString session;
+	// volatile auth token
+	QString access_token;
+	// profile name
+	QString player_name;
+	// profile ID
+	QString uuid;
+	// 'legacy' or 'mojang', depending on account type
+	QString user_type;
+	// Did the auth server reply?
+	bool auth_server_online = false;
+	// Did the user request online mode?
+	bool wants_online = true;
+};
+
+typedef std::shared_ptr<AuthSession> AuthSessionPtr;
diff --git a/logic/auth/MojangAccount.cpp b/logic/auth/MojangAccount.cpp
index f41985ec..6c937ef1 100644
--- a/logic/auth/MojangAccount.cpp
+++ b/logic/auth/MojangAccount.cpp
@@ -24,6 +24,7 @@
 #include <QJsonArray>
 #include <QRegExp>
 #include <QStringList>
+#include <QJsonDocument>
 
 #include <logger/QsLog.h>
 
@@ -165,15 +166,26 @@ AccountStatus MojangAccount::accountStatus() const
 {
 	if (m_accessToken.isEmpty())
 		return NotVerified;
-	if (!m_online)
+	else
 		return Verified;
-	return Online;
 }
 
-std::shared_ptr<YggdrasilTask> MojangAccount::login(QString password)
+std::shared_ptr<YggdrasilTask> MojangAccount::login(AuthSessionPtr session,
+													QString password)
 {
-	if (m_currentTask)
-		return m_currentTask;
+	Q_ASSERT(m_currentTask.get() == nullptr);
+
+	// take care of the true offline status
+	if (accountStatus() == NotVerified && password.isEmpty())
+	{
+		if (session)
+		{
+			session->status = AuthSession::RequiresPassword;
+			fillSession(session);
+		}
+		return nullptr;
+	}
+
 	if (password.isEmpty())
 	{
 		m_currentTask.reset(new RefreshTask(this));
@@ -182,6 +194,8 @@ std::shared_ptr<YggdrasilTask> MojangAccount::login(QString password)
 	{
 		m_currentTask.reset(new AuthenticateTask(this, password));
 	}
+	m_currentTask->assignSession(session);
+
 	connect(m_currentTask.get(), SIGNAL(succeeded()), SLOT(authSucceeded()));
 	connect(m_currentTask.get(), SIGNAL(failed(QString)), SLOT(authFailed(QString)));
 	return m_currentTask;
@@ -189,24 +203,76 @@ std::shared_ptr<YggdrasilTask> MojangAccount::login(QString password)
 
 void MojangAccount::authSucceeded()
 {
-	m_online = true;
+	auto session = m_currentTask->getAssignedSession();
+	if (session)
+	{
+		session->status =
+			session->wants_online ? AuthSession::PlayableOnline : AuthSession::PlayableOffline;
+		fillSession(session);
+		session->auth_server_online = true;
+	}
 	m_currentTask.reset();
 	emit changed();
 }
 
 void MojangAccount::authFailed(QString reason)
 {
+	auto session = m_currentTask->getAssignedSession();
 	// This is emitted when the yggdrasil tasks time out or are cancelled.
 	// -> we treat the error as no-op
 	if (reason == "Yggdrasil task cancelled.")
 	{
-		// do nothing
+		if (session)
+		{
+			session->status = accountStatus() == Verified ? AuthSession::PlayableOffline
+														  : AuthSession::RequiresPassword;
+			session->auth_server_online = false;
+			fillSession(session);
+		}
 	}
 	else
 	{
-		m_online = false;
 		m_accessToken = QString();
 		emit changed();
+		if (session)
+		{
+			session->status = AuthSession::RequiresPassword;
+			session->auth_server_online = true;
+			fillSession(session);
+		}
 	}
 	m_currentTask.reset();
 }
+
+void MojangAccount::fillSession(AuthSessionPtr session)
+{
+	// the user name. you have to have an user name
+	session->username = m_username;
+	// volatile auth token
+	session->access_token = m_accessToken;
+	// the semi-permanent client token
+	session->client_token = m_clientToken;
+	if (currentProfile())
+	{
+		// profile name
+		session->player_name = currentProfile()->name;
+		// profile ID
+		session->uuid = currentProfile()->id;
+		// 'legacy' or 'mojang', depending on account type
+		session->user_type = currentProfile()->legacy ? "legacy" : "mojang";
+		if (!session->access_token.isEmpty())
+		{
+			session->session = "token:" + m_accessToken + ":" + m_profiles[m_currentProfile].id;
+		}
+		else
+		{
+			session->session = "-";
+		}
+	}
+	else
+	{
+		session->player_name = "Player";
+		session->session = "-";
+	}
+	session->u = user();
+}
diff --git a/logic/auth/MojangAccount.h b/logic/auth/MojangAccount.h
index dd5d54ae..a0565e2c 100644
--- a/logic/auth/MojangAccount.h
+++ b/logic/auth/MojangAccount.h
@@ -23,6 +23,7 @@
 #include <QMap>
 
 #include <memory>
+#include "AuthSession.h"
 
 class Task;
 class YggdrasilTask;
@@ -45,17 +46,10 @@ struct AccountProfile
 	bool legacy;
 };
 
-struct User
-{
-	QString id;
-	QMultiMap<QString,QString> properties;
-};
-
 enum AccountStatus
 {
 	NotVerified,
-	Verified,
-	Online
+	Verified
 };
 
 /**
@@ -84,7 +78,7 @@ public: /* construction */
 	QJsonObject saveToJson() const;
 
 public: /* manipulation */
-	/**
+		/**
 	 * Sets the currently selected profile to the profile with the given ID string.
 	 * If profileId is not in the list of available profiles, the function will simply return
 	 * false.
@@ -95,12 +89,9 @@ public: /* manipulation */
 	 * Attempt to login. Empty password means we use the token.
 	 * If the attempt fails because we already are performing some task, it returns false.
 	 */
-	std::shared_ptr<YggdrasilTask> login(QString password = QString());
+	std::shared_ptr<YggdrasilTask> login(AuthSessionPtr session,
+										 QString password = QString());
 
-	void downgrade()
-	{
-		m_online = false;
-	}
 public: /* queries */
 	const QString &username() const
 	{
@@ -122,19 +113,11 @@ public: /* queries */
 		return m_profiles;
 	}
 
-	const User & user()
+	const User &user()
 	{
 		return m_user;
 	}
 
-	//! Get the session ID required for legacy Minecraft versions
-	QString sessionId() const
-	{
-		if (m_currentProfile != -1 && !m_accessToken.isEmpty())
-			return "token:" + m_accessToken + ":" + m_profiles[m_currentProfile].id;
-		return "-";
-	}
-
 	//! Returns the currently selected profile (if none, returns nullptr)
 	const AccountProfile *currentProfile() const;
 
@@ -169,16 +152,17 @@ protected: /* variables */
 	// the user structure, whatever it is.
 	User m_user;
 
-	// true when the account is verified
-	bool m_online = false;
-
 	// current task we are executing here
 	std::shared_ptr<YggdrasilTask> m_currentTask;
 
-private slots:
+private
+slots:
 	void authSucceeded();
 	void authFailed(QString reason);
 
+private:
+	void fillSession(AuthSessionPtr session);
+
 public:
 	friend class YggdrasilTask;
 	friend class AuthenticateTask;
diff --git a/logic/auth/YggdrasilTask.h b/logic/auth/YggdrasilTask.h
index 85f5a1e1..4a87067a 100644
--- a/logic/auth/YggdrasilTask.h
+++ b/logic/auth/YggdrasilTask.h
@@ -35,6 +35,21 @@ class YggdrasilTask : public Task
 public:
 	explicit YggdrasilTask(MojangAccount * account, QObject *parent = 0);
 
+	/**
+	 * assign a session to this task. the session will be filled with required infomration
+	 * upon completion
+	 */
+	void assignSession(AuthSessionPtr session)
+	{
+		m_session = session;
+	}
+
+	/// get the assigned session for filling with information.
+	AuthSessionPtr getAssignedSession()
+	{
+		return m_session;
+	}
+
 	/**
 	 * Class describing a Yggdrasil error response.
 	 */
@@ -117,4 +132,6 @@ protected:
 
 	const int timeout_max = 10000;
 	const int time_step = 50;
+
+	AuthSessionPtr m_session;
 };
diff --git a/logic/auth/flows/RefreshTask.cpp b/logic/auth/flows/RefreshTask.cpp
index f63c736e..5a55ed91 100644
--- a/logic/auth/flows/RefreshTask.cpp
+++ b/logic/auth/flows/RefreshTask.cpp
@@ -25,8 +25,7 @@
 
 #include "logger/QsLog.h"
 
-RefreshTask::RefreshTask(MojangAccount *account, QObject *parent)
-	: YggdrasilTask(account, parent)
+RefreshTask::RefreshTask(MojangAccount *account) : YggdrasilTask(account)
 {
 }
 
@@ -126,7 +125,6 @@ bool RefreshTask::processResponse(QJsonObject responseData)
 		m_account->m_user = u;
 	}
 
-
 	// We've made it through the minefield of possible errors. Return true to indicate that
 	// we've succeeded.
 	QLOG_DEBUG() << "Finished reading refresh response.";
diff --git a/logic/auth/flows/RefreshTask.h b/logic/auth/flows/RefreshTask.h
index 2fd50c60..0dadc025 100644
--- a/logic/auth/flows/RefreshTask.h
+++ b/logic/auth/flows/RefreshTask.h
@@ -30,7 +30,7 @@ class RefreshTask : public YggdrasilTask
 {
 	Q_OBJECT
 public:
-	RefreshTask(MojangAccount * account, QObject *parent = 0);
+	RefreshTask(MojangAccount * account);
 
 protected:
 	virtual QJsonObject getRequestContent() const;
@@ -41,3 +41,4 @@ protected:
 
 	QString getStateMessage(const YggdrasilTask::State state) const;
 };
+
diff --git a/logic/net/NetJob.cpp b/logic/net/NetJob.cpp
index 8b79bc54..9e800d13 100644
--- a/logic/net/NetJob.cpp
+++ b/logic/net/NetJob.cpp
@@ -31,7 +31,6 @@ void NetJob::partSucceeded(int index)
 	num_succeeded++;
 	QLOG_INFO() << m_job_name.toLocal8Bit() << "progress:" << num_succeeded << "/"
 				<< downloads.size();
-	emit filesProgress(num_succeeded, num_failed, downloads.size());
 
 	if (num_failed + num_succeeded == downloads.size())
 	{
@@ -55,7 +54,6 @@ void NetJob::partFailed(int index)
 	{
 		QLOG_ERROR() << "Part" << index << "failed 3 times (" << downloads[index]->m_url << ")";
 		num_failed++;
-		emit filesProgress(num_succeeded, num_failed, downloads.size());
 		if (num_failed + num_succeeded == downloads.size())
 		{
 			QLOG_ERROR() << m_job_name.toLocal8Bit() << "failed.";
diff --git a/logic/net/NetJob.h b/logic/net/NetJob.h
index 68c4c408..03d6a36e 100644
--- a/logic/net/NetJob.h
+++ b/logic/net/NetJob.h
@@ -84,7 +84,6 @@ public:
 	{
 		return m_job_name;
 	}
-	;
 	virtual bool isRunning() const
 	{
 		return m_running;
@@ -94,7 +93,6 @@ public:
 signals:
 	void started();
 	void progress(qint64 current, qint64 total);
-	void filesProgress(int, int, int);
 	void succeeded();
 	void failed();
 public