Windows ui xaml dll 0xc000027b

Windows.UI.Xaml.dll gives error 0xc000027b
Little background:

yesterday I had a Skype group video chat and my PC gave me 3/4 times a GSOD (can’t find the dumps, though) VIDEO SCHEDULER INTERNAL ERROR.

Since yesterday I’m having a pretty annoying bug, or shall I say two:

A lot of UWP crash at start (calculator, mail, Unigram etc.).
When searching something with Cortana, the font is weird. It looks like times new roman.
Closer inspection, and every time bug #1 occurs, Windows.UI.Xaml.dll gives an error.

Windows.UI.Xaml.dll, version: 10.0.17763.292
Exception code: 0xc000027b
Directory of the module generating the error: C:\Windows\System32\Windows.UI.Xaml.dll

And along with these errors, some .NET Runtime errors 1026

framework version: v4.0.30319
Exception: System.IO.FileNotFoundException
in MS.Internal.Text.TextInterface.Native.Util.ConvertHresultToException(Int32)
in MS.Internal.Text.TextInterface.FontFamily.GetFirstMatchingFont(MS.Internal.Text.TextInterface.FontWeight, MS.Internal.Text.TextInterface.FontStretch, MS.Internal.Text.TextInterface.FontStyle)
in MS.Internal.Text.TextInterface.FontFamily.get_Metrics()
in MS.Internal.FontFace.PhysicalFontFamily.MS.Internal.FontFace.IFontFamily.LineSpacing(Double, Double, Double, System.Windows.Media.TextFormattingMode)
in MS.Internal.TextFormatting.SimpleTextLine..ctor(MS.Internal.TextFormatting.FormatSettings, Int32, Int32, System.Collections.ArrayList, Int32 ByRef, Int32 ByRef, Double)
in MS.Internal.TextFormatting.SimpleTextLine.Create(MS.Internal.TextFormatting.FormatSettings, Int32, Int32, Double)
in MS.Internal.TextFormatting.TextFormatterImp.FormatLineInternal(System.Windows.Media.TextFormatting.TextSource, Int32, Int32, Double, System.Windows.Media.TextFormatting.TextParagraphProperties, System.Windows.Media.TextFormatting.TextLineBreak, System.Windows.Media.TextFormatting.TextRunCache)
in MS.Internal.TextFormatting.TextFormatterImp.FormatLine(System.Windows.Media.TextFormatting.TextSource, Int32, Double, System.Windows.Media.TextFormatting.TextParagraphProperties, System.Windows.Media.TextFormatting.TextLineBreak, System.Windows.Media.TextFormatting.TextRunCache)
in System.Windows.Controls.TextBlock.MeasureOverride(System.Windows.Size)
in System.Windows.FrameworkElement.MeasureCore(System.Windows.Size)
in System.Windows.UIElement.Measure(System.Windows.Size)
in System.Windows.Controls.Grid.MeasureCell(Int32, Boolean)
in System.Windows.Controls.Grid.MeasureCellsGroup(Int32, System.Windows.Size, Boolean, Boolean, Boolean ByRef)
in System.Windows.Controls.Grid.MeasureOverride(System.Windows.Size)
in System.Windows.FrameworkElement.MeasureCore(System.Windows.Size)
in System.Windows.UIElement.Measure(System.Windows.Size)
in System.Windows.Controls.Grid.MeasureCell(Int32, Boolean)
in System.Windows.Controls.Grid.MeasureCellsGroup(Int32, System.Windows.Size, Boolean, Boolean, Boolean ByRef)
in System.Windows.Controls.Grid.MeasureOverride(System.Windows.Size)
in System.Windows.FrameworkElement.MeasureCore(System.Windows.Size)
in System.Windows.UIElement.Measure(System.Windows.Size)
in MS.Internal.Helper.MeasureElementWithSingleChild(System.Windows.UIElement, System.Windows.Size)
in System.Windows.Controls.ContentPresenter.MeasureOverride(System.Windows.Size)
in System.Windows.FrameworkElement.MeasureCore(System.Windows.Size)
in System.Windows.UIElement.Measure(System.Windows.Size)
in System.Windows.Controls.Border.MeasureOverride(System.Windows.Size)
in System.Windows.FrameworkElement.MeasureCore(System.Windows.Size)
in System.Windows.UIElement.Measure(System.Windows.Size)
in System.Windows.Controls.Control.MeasureOverride(System.Windows.Size)
in System.Windows.FrameworkElement.MeasureCore(System.Windows.Size)
in System.Windows.UIElement.Measure(System.Windows.Size)
in System.Windows.Controls.Grid.MeasureCell(Int32, Boolean)
in System.Windows.Controls.Grid.MeasureCellsGroup(Int32, System.Windows.Size, Boolean, Boolean, Boolean ByRef)
in System.Windows.Controls.Grid.MeasureOverride(System.Windows.Size)
in System.Windows.FrameworkElement.MeasureCore(System.Windows.Size)
in System.Windows.UIElement.Measure(System.Windows.Size)
in MS.Internal.Helper.MeasureElementWithSingleChild(System.Windows.UIElement, System.Windows.Size)
in System.Windows.Controls.ContentPresenter.MeasureOverride(System.Windows.Size)
in System.Windows.FrameworkElement.MeasureCore(System.Windows.Size)
in System.Windows.UIElement.Measure(System.Windows.Size)
in System.Windows.Controls.Border.MeasureOverride(System.Windows.Size)
in System.Windows.FrameworkElement.MeasureCore(System.Windows.Size)
in System.Windows.UIElement.Measure(System.Windows.Size)
in System.Windows.Controls.Control.MeasureOverride(System.Windows.Size)
in System.Windows.FrameworkElement.MeasureCore(System.Windows.Size)
in System.Windows.UIElement.Measure(System.Windows.Size)
in System.Windows.Controls.Grid.MeasureOverride(System.Windows.Size)
in System.Windows.FrameworkElement.MeasureCore(System.Windows.Size)
in System.Windows.UIElement.Measure(System.Windows.Size)
in System.Windows.ContextLayoutManager.UpdateLayout()
in System.Windows.ContextLayoutManager.UpdateLayoutCallback(System.Object)
in System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
in System.Windows.Media.MediaContext.RenderMessageHandlerCore(System.Object)
in System.Windows.Media.MediaContext.RenderMessageHandler(System.Object)
in System.Windows.Interop.HwndTarget.OnResize()
in System.Windows.Interop.HwndTarget.HandleMessage(MS.Internal.Interop.WindowMessage, IntPtr, IntPtr)
in System.Windows.Interop.HwndSource.HwndTargetFilterMessage(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)
in MS.Win32.HwndWrapper.WndProc(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)
in MS.Win32.HwndSubclass.DispatcherCallbackOperation(System.Object)
in System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32)
in System.Windows.Threading.ExceptionWrapper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate)
in System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority, System.TimeSpan, System.Delegate, System.Object, Int32)
in MS.Win32.HwndSubclass.SubclassWndProc(IntPtr, Int32, IntPtr, IntPtr)
in MS.Win32.UnsafeNativeMethods.CallWindowProc(IntPtr, IntPtr, Int32, IntPtr, IntPtr)
in MS.Win32.HwndSubclass.DefWndProcWrapper(IntPtr, Int32, IntPtr, IntPtr)
in MS.Win32.UnsafeNativeMethods.CallWindowProc(IntPtr, IntPtr, Int32, IntPtr, IntPtr)
in MS.Win32.HwndSubclass.SubclassWndProc(IntPtr, Int32, IntPtr, IntPtr)

Here’s the things I’ve tried so far:

Reset each and every app I’ve found affected by this
Windows Apps Troubleshooter (absolutely no effort from it)
sfc scannow
Dism repair
Reset of Windows Apps through Powershell
In-place re-installation
None of the above worked. Can someone help me figure out how to solve these issues?

Hi everyone,

So we’re developing a metro style app, and at random moments, at some machines, when running the app outside of Visual Studio, we’re experiencing crashes. The only thing that is left is an entry in the system’s event log like this:

Faulting application name: SSW8.exe, version: 1.0.0.1, time stamp: 0x51052184
Faulting module name: Windows.UI.Xaml.dll, version: 6.2.9200.16420, time stamp: 0x505a9ac7
Exception code: 0xc000027b
Fault offset: 0x00566c57
Faulting process id: 0x1b8
Faulting application start time: 0x01cdfca483a38f92
Faulting application path: C:\Program Files\WindowsApps\5848609F-881D-402D-8A4D-666026351761_0.0.0.7_neutral__x08hm7yed73n0\SSW8.exe
Faulting module path: C:\Windows\System32\Windows.UI.Xaml.dll
Report Id: d7f56dc7-6897-11e2-afb6-b684e9dbbd10
Faulting package full name: 5848609F-881D-402D-8A4D-666026351761_0.0.0.7_neutral__x08hm7yed73n0
Faulting package-relative application ID: App

At first, this was happening all the time on all our machines, but only outside of Visual Studio. This crash never happened when running the app in Visual Studio. Our app consists of several pages, but most of them are like ‘config’ pages, which the user
goes through in order to set up the real deal. After going through such «wizzard», the user gets to the actual page, on which he spends most of the time (usually around 1-2 hours, interacting every 5-20 seconds). After he finishes his stuff on that
page, he gets navigated to the initial page and can start the «setup» again.

At first we’ve used 2 machines for development and testing. An i7 Macbook + Windows 8 on Parallels Desktop virtual machine and an i5 Toshiba with Windows 8. We’ve managed to get rid most of the crashes by properly disposing the viewmodels on our pages,
e.g. disconnecting viewmodel methods from model’s events when navigating out of a page etc. However, this did not solve the problem completely. We got our hands on two other devices — a Dell Lattitude 10 tablet and an Asus i3 computer, both running Windows
8 Pro. Both of them were still experiencing the mentioned crashes, also only when run outside of visual studio. In VS no crash at all.

Since we’ve suspected property change events to be causing the problems, we’ve added a flag to all viewmodels, that tells it whether it’s been disposed or not (we call Dispose for each viewmodel explicitly), and if it was, the OnPropertyChanged isn’t called
anymore. This seemed to help — both Dell and Asus stopped experiencing the mentioned crashes… most of the times. We still saw the crash once or twice on each of the machines, but it’s so rare, that it’s impossible to repeat it. The MacBook and Toshiba haven’t
crashed even once since that.

However… we got a new device — a 1,5GHz Atom tablet, which got Windows 8 Pro installed on it. This machine is experiencing the same crash all the time. We haven’t installed Visual Studio there yet — we only got the developer license and deployed a debug
version of our app. This is becoming very annoying, as we have no way of predicting if the app will work on a particular device or not. We have no clue what does this depend on, and we’re running out of ideas how to identify the cause of the crash.

What is the mentioned exception code anyway? I’ve seen a lot of people having it, and all the solved cases had a different cause, none of which apply to our app. Is there any way we can get more details? It’s a bit hard, because as long as we run it under
VS we can’t really get any crash. Previously, the app was crashing when run outside of VS, and then had a debugger connected to it (attach to process). I could try this on the new tablet and hopefully get a stack trace. Any other suggestions? Can this be a
hardware-related issue? The «weaker» the machine is, the more often the error seems to be…

Please help! If you need any more details regarding the app, the hardware or anything at all, please tell me and I’ll get it for you. One of our apps requirements is NOT to crash during operation… it’s essential.

Thanks!
Marcin

Запускаю проводник, открывается на секунду и закрывается.
В журнале получаю такую ошибку:

Имя сбойного приложения: Explorer.EXE, версия: 10.0.25346.1001, метка времени: 0x7b2fb1e6
Имя сбойного модуля: Microsoft.UI.Xaml.dll, версия: 3.1.4.0, метка времени: 0xd9502199
Код исключения: 0xc000027b
Смещение ошибки: 0x00000000007e5eaa
Идентификатор сбойного процесса: 0x0xD30
Время запуска сбойного приложения: 0x0x1D9BBCFCCF30B0D
Путь сбойного приложения: C:\Windows\Explorer.EXE
Путь сбойного модуля: C:\Windows\SystemApps\Microsoft.WindowsAppRuntime.CBS_8wekyb3d8bbwe\Microsoft.UI .Xaml.dll
Идентификатор отчета: bfd7f6e7-da07-4282-b98d-381813b8f9f2
Полное имя сбойного пакета:
Код приложения, связанного со сбойным пакетом:

Обновления стоят, систему перезагружал, процесс проводника перезапускал, журнал проводника чистил, DISM.exe /Online /Cleanup-image /Restorehealth использовал, sfc /scannow использовал.
https://github.com/microsoft/P… 1048591877 пробовал, не помогло.
https://www.reddit.com/r/Windo… r_command/ пробовал, не помогло

I’ve an C#/UWP-app in beta-release in the Microsoft App-Store. Most of the users have no problems with the App, but for one user the app is crashing on startup. You can’t even see the Splash-Screen (it should be displaying a logo or color, however it is white).

In the eventlog this genreic event is logged:

0xc000027b (Windows.UI.XAML)

The only difference is, that his Windows-10 Build differs from the other users (10.0.10240 vs 10.0.10586). However, I’ve collected the crashdumps («minidumps») and tried to follow this tutorial.
If i try this command:

dt <Parameter[0]> combase!_STOWED_EXCEPTION_INFORMATION_HEADER*

Windbg gives me this:

Memory read error (at Parameter[0])

Actually I’ve integrated the hockey-sdk for automatic crash-reports, but it doesn’t report me that specific crash in the dashboard.

How can I trace down this crash?

Update:
I’ve managed to get the Call-Stack with PDE:

Windows_UI_Xaml!DirectUI::PropertyPathListener::GetValue+0x3e
Windows_UI_Xaml!DirectUI::BindingExpression::GetValue+0xbb
Windows_UI_Xaml!DirectUI::DependencyObject::SetValueExpression+0x24b
Windows_UI_Xaml!DirectUI::DependencyObject::SetBindingCore+0x56
Windows_UI_Xaml!DirectUI::DependencyObject::SetBindingCallback+0x146
Windows_UI_Xaml!CBinding::SetBinding+0x48
Windows_UI_Xaml!XamlNativeRuntime::SetValue+0x4c2
Windows_UI_Xaml!BinaryFormatObjectWriter::SetValueOnCurrentInstance+0x1ad
Windows_UI_Xaml!BinaryFormatObjectWriter::WriteNode+0x144a
Windows_UI_Xaml!CTemplateContent::LoadXbfVersion2+0xd1
Windows_UI_Xaml!CTemplateContent::Load+0x4d
Windows_UI_Xaml!CFrameworkTemplate::LoadContent+0x270
Windows_UI_Xaml!CControlTemplate::LoadContent+0x18
Windows_UI_Xaml!CFrameworkElement::ApplyTemplate+0x30a
Windows_UI_Xaml!CContentControl::ApplyTemplate+0x20
Windows_UI_Xaml!CFrameworkElement::InvokeApplyTemplate+0x17f
Windows_UI_Xaml!CFrameworkElement::MeasureCore+0x2a3
Windows_UI_Xaml!CUIElement::MeasureInternal+0x1cb
Windows_UI_Xaml!CUIElement::Measure+0x598
Windows_UI_Xaml!CGrid::MeasureOverride+0x307
Windows_UI_Xaml!CFrameworkElement::MeasureCore+0x707
Windows_UI_Xaml!CUIElement::MeasureInternal+0x1cb
Windows_UI_Xaml!CUIElement::Measure+0x598
Windows_UI_Xaml!CGrid::MeasureOverride+0x307
Windows_UI_Xaml!CFrameworkElement::MeasureCore+0x707

This would mean, that I’ve somewhere an incorrect binding?