SSMS crashes instantly

I have SSMS 2017 installed on my laptop. Every time I start SSMS, it sits there for about 5 seconds, and it closes / crashes instantly without me clicking on anything. I checked out the Event Viewer. Here is what it shows:

1) .NET Runtime

Application: Ssms.exe Framework Version: v4.0.30319 Description: The process was terminated due to an unhandled exception. Exception Info: System.NotImplementedException at System.Windows.Baml2006.Baml2006SchemaContext.ResolveBamlType(BamlType, Int16) at System.Windows.Baml2006.Baml2006SchemaContext.GetXamlType(Int16) at System.Windows.Baml2006.Baml2006Reader.Process_ElementStart() at System.Windows.Baml2006.Baml2006Reader.Process_OneBamlRecord() at System.Windows.Baml2006.Baml2006Reader.ReadObject(System.Windows.Baml2006.KeyRecord) at System.Windows.ResourceDictionary.CreateObject(System.Windows.Baml2006.KeyRecord) at System.Windows.ResourceDictionary.OnGettingValue(System.Object, System.Object ByRef, Boolean ByRef) at System.Windows.ResourceDictionary.OnGettingValuePrivate(System.Object, System.Object ByRef, Boolean ByRef) at System.Windows.ResourceDictionary.GetValueWithoutLock(System.Object, Boolean ByRef) at System.Windows.ResourceDictionary.GetValue(System.Object, Boolean ByRef) at System.Windows.ResourceDictionary.FetchResource(System.Object, Boolean, Boolean, Boolean, Boolean ByRef) at System.Windows.FrameworkElement.FindResourceInTree(System.Windows.FrameworkElement, System.Windows.FrameworkContentElement, System.Windows.DependencyProperty, System.Object, System.Object, Boolean, Boolean, System.Windows.DependencyObject, System.Windows.InheritanceBehavior ByRef, System.Object ByRef) at System.Windows.FrameworkElement.FindResourceInternal(System.Windows.FrameworkElement, System.Windows.FrameworkContentElement, System.Windows.DependencyProperty, System.Object, System.Object, Boolean, Boolean, System.Windows.DependencyObject, Boolean, System.Object ByRef) at System.Windows.FrameworkElement.FindImplicitStyleResource(System.Windows.FrameworkElement, System.Object, System.Object ByRef) at System.Windows.FrameworkElement.GetRawValue(System.Windows.DependencyProperty, System.Windows.PropertyMetadata, System.Windows.EffectiveValueEntry ByRef) at System.Windows.FrameworkElement.EvaluateBaseValueCore(System.Windows.DependencyProperty, System.Windows.PropertyMetadata, System.Windows.EffectiveValueEntry ByRef) at System.Windows.DependencyObject.EvaluateEffectiveValue(System.Windows.EntryIndex, System.Windows.DependencyProperty, System.Windows.PropertyMetadata, System.Windows.EffectiveValueEntry, System.Windows.EffectiveValueEntry, System.Windows.OperationType)
at System.Windows.DependencyObject.UpdateEffectiveValue(System.Windows.EntryIndex, System.Windows.DependencyProperty, System.Windows.PropertyMetadata, System.Windows.EffectiveValueEntry, System.Windows.EffectiveValueEntry ByRef, Boolean, Boolean, System.Windows.OperationType) at System.Windows.DependencyObject.InvalidateProperty(System.Windows.DependencyProperty, Boolean) at System.Windows.FrameworkElement.UpdateStyleProperty()
at System.Windows.TreeWalkHelper.OnResourcesChanged(System.Windows.DependencyObject, System.Windows.ResourcesChangeInfo, Boolean) at System.Windows.TreeWalkHelper.InvalidateOnResourcesChange(System.Windows.FrameworkElement, System.Windows.FrameworkContentElement, System.Windows.ResourcesChangeInfo) at System.Windows.ResourceDictionary.NotifyOwners(System.Windows.ResourcesChangeInfo) at System.Windows.ResourceDictionary.SetKeys(System.Collections.Generic.IList`1, System.IServiceProvider) at System.Windows.ResourceDictionary.SetDeferrableContent(System.Windows.DeferrableContent) at System.Windows.Baml2006.WpfSharedBamlSchemaContext+<>c.b__297_0(System.Object, System.Object) at System.Windows.Baml2006.WpfKnownMemberInvoker.SetValue(System.Object, System.Object) at MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(System.Xaml.XamlMember, System.Object, System.Object) at MS.Internal.Xaml.Runtime.ClrObjectRuntime.SetValue(System.Object, System.Xaml.XamlMember, System.Object)

Exception Info: System.Windows.Markup.XamlParseException at System.Windows.Markup.WpfXamlLoader.Load(System.Xaml.XamlReader, System.Xaml.IXamlObjectWriterFactory, Boolean, System.Object, System.Xaml.XamlObjectWriterSettings, System.Uri) at System.Windows.Markup.WpfXamlLoader.LoadBaml(System.Xaml.XamlReader, Boolean, System.Object, System.Xaml.Permissions.XamlAccessLevel, System.Uri) at System.Windows.Markup.XamlReader.LoadBaml(System.IO.Stream, System.Windows.Markup.ParserContext, System.Object, Boolean) at System.Windows.Application.LoadComponent(System.Object, System.Uri)
at Microsoft.VisualStudio.PlatformUI.VsStatusBar.InitializeComponent() at Microsoft.VisualStudio.PlatformUI.WorkerThreadStatusBarContainer.CreateRootUIElement() at Microsoft.Internal.VisualStudio.PlatformUI.WorkerThreadElementContainer.CreateHostedVisualWorker() at System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate) at System.Windows.Threading.DispatcherOperation.InvokeImpl() at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(System.Object) at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object) at MS.Internal.CulturePreservingExecutionContext.Run(MS.Internal.CulturePreservingExecutionContext, System.Threading.ContextCallback, System.Object) at System.Windows.Threading.DispatcherOperation.Invoke() at System.Windows.Threading.Dispatcher.ProcessQueue() at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef) at MS.Win32.HwndWrapper.WndProc(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef) at MS.Win32.HwndSubclass.DispatcherCallbackOperation(System.Object) at System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32) at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate) at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority, System.TimeSpan, System.Delegate, System.Object, Int32) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr, Int32, IntPtr, IntPtr)
at MS.Win32.UnsafeNativeMethods.DispatchMessage(System.Windows.Interop.MSG ByRef) at System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame) at System.Windows.Threading.Dispatcher.PushFrame(System.Windows.Threading.DispatcherFrame) at Microsoft.Internal.VisualStudio.PlatformUI.BackgroundDispatcher.ThreadProc(System.Object) at System.Threading.ThreadHelper.ThreadStart_Context(System.Object)
at System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) at System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object) at System.Threading.ThreadHelper.ThreadStart(System.Object)

2) Application Error

Faulting application name: Ssms.exe, version: 2017.140.17119.0, time stamp: 0x591bcf8a 
Faulting module name: KERNELBASE.dll, version:
6.1.7601.23864, time stamp: 0x595fa536 
Exception code: 0xe0434352 
Fault offset: 0x0000c54f 
Faulting process id: 0x250c 
Faulting application start time: 0x01d337a827d6ebfc 
Faulting application path: C:\Program Files (x86)\Microsoft SQL Server\140\Tools\Binn\ManagementStudio\Ssms.exe 
Faulting module path: C:\WINDOWS\syswow64\KERNELBASE.dll Report Id: 6f1ce4e3-a39b-11e7-9593-b8763fd92420

3) Windows Error Reporting

Fault bucket 500, type 5 Event Name: CLR20r3 Response: Not available Cab Id: 0

Problem signature: P1: Ssms.exe P2: 2017.140.17119.0 P3: 591bcf8a P4: PresentationFramework P5: 4.6.1099.0 P6: 58d87db9 P7: f9b P8: 5b P9: System.Windows.Markup.XamlParse P10:

Why is this happening, and what must I do to resolve it?

I had this exact same issue with SSMS 17.9 and it seemed to have been caused when I uninstalled one out of my two versions of Microsoft Visual Studio that were on my computer.

After two days of attempting Re-install just SSMS, Repair, SSMS, trying to repair my .NET files, rebooting, and clearing files out of the appdata directory, the only thing that resolved the issue for me was uninstalling all the following programs:

• SSMS
• Microsoft Visual Studio 2015 Shell (Isolated)
• Microsoft Visual Studio Tools for Applications 2015
• Microsoft Visual Studio Tools for Applications 2015 Language support

Then I ran the SSMS installer again, which installs all three of the other programs as well as SSMS. I have not seen the issue again since I have done this.

Hopefully this helps!!