When I navigate to Tools > Options > Extensions and Updates, Visual Studio 2015 Update 3 crashes with a NullReferenceException. I can see the following callstack both in Event Viewer and when debugging the exception in another instance of VS2015:
Application: devenv.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.NullReferenceException
at Microsoft.VisualStudio.ExtensionManager.VSPackage.ToolsOptionsPage.OnActivate(System.ComponentModel.CancelEventArgs)
at Microsoft.VisualStudio.Shell.DialogPage+DialogSubclass.WndProc(System.Windows.Forms.Message ByRef)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr, Int32, IntPtr, IntPtr)
at Microsoft.VisualStudio.Shell.Interop.IVsUIDataSource.Invoke(System.String, System.Object, System.Object ByRef)
at Microsoft.Internal.VisualStudio.PlatformUI.DataSource.Invoke(System.String, System.Object, System.Object ByRef)
at Microsoft.VisualStudio.PlatformUI.VsCommand.Execute(System.Object)
at MS.Internal.Commands.CommandHelpers.CriticalExecuteCommandSource(System.Windows.Input.ICommandSource, Boolean)
at System.Windows.Controls.MenuItem.InvokeClickAfterRender(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.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)
I assume it's something local to my environment but I can't figure out what's causing it or how to revert to a state that undoes the issue. I've run
devenv.exe /ResetUserData
and
devenv.exe /ResetSettings
to no avail. I've also uninstalled and reinstalled Visual Studio 2015. After doing that I can get to the "Extensions and Updates" once or twice but it doesn't let me add a new gallery. Eventually it starts throwing the NullReferenceException again.
I'm open to any additional troubleshooting suggestions.