diff --git a/application/InstanceWindow.cpp b/application/InstanceWindow.cpp
index 9fdd3ca87..7b3e1d10d 100644
--- a/application/InstanceWindow.cpp
+++ b/application/InstanceWindow.cpp
@@ -162,7 +162,7 @@ void InstanceWindow::closeEvent(QCloseEvent *event)
 	bool proceed = true;
 	if(!m_doNotSave)
 	{
-		proceed &= m_container->requestClose(event);
+		proceed &= m_container->prepareToClose();
 	}
 
 	if(!proceed)
@@ -181,6 +181,11 @@ void InstanceWindow::closeEvent(QCloseEvent *event)
 	}
 }
 
+bool InstanceWindow::saveAll()
+{
+	return m_container->prepareToClose();
+}
+
 void InstanceWindow::on_btnKillMinecraft_clicked()
 {
 	if(m_instance->isRunning())
@@ -195,7 +200,8 @@ void InstanceWindow::on_btnKillMinecraft_clicked()
 			m_proc->abort();
 		}
 	}
-	else
+	// FIXME: duplicate logic between MainWindow and InstanceWindow
+	else if(saveAll())
 	{
 		m_launchController.reset(new LaunchController());
 		m_launchController->setInstance(m_instance);
@@ -207,7 +213,7 @@ void InstanceWindow::on_btnKillMinecraft_clicked()
 
 void InstanceWindow::onSucceeded()
 {
-	if (m_instance->settings()->get("AutoCloseConsole").toBool() && m_container->requestClose(nullptr))
+	if (m_instance->settings()->get("AutoCloseConsole").toBool() && m_container->prepareToClose())
 	{
 		this->close();
 		return;
diff --git a/application/InstanceWindow.h b/application/InstanceWindow.h
index 71bf4d40c..1a6bc8c3a 100644
--- a/application/InstanceWindow.h
+++ b/application/InstanceWindow.h
@@ -41,6 +41,9 @@ public:
 		m_shouldQuit = shouldQuit;
 	}
 
+	// save all settings and changes (prepare for launch)
+	bool saveAll();
+
 signals:
 	void isClosing();
 
diff --git a/application/MainWindow.cpp b/application/MainWindow.cpp
index 3a2977849..e07686dd7 100644
--- a/application/MainWindow.cpp
+++ b/application/MainWindow.cpp
@@ -1463,6 +1463,15 @@ void MainWindow::launch(InstancePtr instance, bool online, BaseProfilerFactory *
 {
 	if(instance->canLaunch())
 	{
+		// FIXME: duplicate logic between MainWindow and InstanceWindow
+		auto window = m_instanceWindows.find(instance->id());
+		if(window != m_instanceWindows.end())
+		{
+			if(!(*window)->saveAll())
+			{
+				return;
+			}
+		}
 		m_launchController.reset(new LaunchController());
 		m_launchController->setInstance(instance);
 		m_launchController->setOnline(online);
diff --git a/application/pagedialog/PageDialog.cpp b/application/pagedialog/PageDialog.cpp
index 7665ddf70..4101da4f8 100644
--- a/application/pagedialog/PageDialog.cpp
+++ b/application/pagedialog/PageDialog.cpp
@@ -53,7 +53,7 @@ PageDialog::PageDialog(BasePageProviderPtr pageProvider, QString defaultId, QWid
 void PageDialog::closeEvent(QCloseEvent *event)
 {
 	qDebug() << "Paged dialog close requested";
-	if (m_container->requestClose(event))
+	if (m_container->prepareToClose())
 	{
 		qDebug() << "Paged dialog close approved";
 		MMC->settings()->set("PagedGeometry", saveGeometry().toBase64());
diff --git a/application/widgets/PageContainer.cpp b/application/widgets/PageContainer.cpp
index 24814d577..840b39d42 100644
--- a/application/widgets/PageContainer.cpp
+++ b/application/widgets/PageContainer.cpp
@@ -215,7 +215,7 @@ void PageContainer::currentChanged(const QModelIndex &current)
 	showPage(current.isValid() ? m_proxyModel->mapToSource(current).row() : -1);
 }
 
-bool PageContainer::requestClose(QCloseEvent *event)
+bool PageContainer::prepareToClose()
 {
 	for (auto page : m_model->pages())
 	{
diff --git a/application/widgets/PageContainer.h b/application/widgets/PageContainer.h
index 939712097..e7dc8b084 100644
--- a/application/widgets/PageContainer.h
+++ b/application/widgets/PageContainer.h
@@ -41,7 +41,11 @@ public:
 
 	void addButtons(QWidget * buttons);
 	void addButtons(QLayout * buttons);
-	bool requestClose(QCloseEvent *event);
+	/*
+	 * Save any unsaved state and prepare to be closed.
+	 * @return true if everything can be saved, false if there is something that requires attention
+	 */
+	bool prepareToClose();
 
 	virtual bool selectPage(QString pageId) override;