Universal Windows Platform (UWP)
A Microsoft platform for building and publishing apps for Windows desktop devices.
2,820 questions
UWP app reports 'application busy' system exception in COM call
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Jos Huybrighs
336
Reputation points
I have a DesktopBridge app (UWP app with a win32 process launched from the app) published to the Windows Store where I see now and then crashes in MS AppCenter.
The crashes occur inside a COM handler and seem to indicate that there is some kind of deadlock.
How can I find out what is actually reporting the deadlock? I see in ms appcenter an IID (49A07732-E7B8-5C5B-9DE7-22E33CB97004) for a COM call but I have no idea what this COM call would be.
This is the exception I see in ms appcenter:
System.Exception: The message filter indicated that the application is busy. A COM call (IID: {49A07732-E7B8-5C5B-9DE7-22E33CB97004}, method index: 3) to an ASTA (thread 7668) appears deadlocked and was timed out.
This is the stack (reported in ms appcenter):
System.Runtime.InteropServices McgMarshal.ThrowOnExternalCallFailed (Int32 hr, RuntimeTypeHandle typeHnd)
f:\dd\ndp\fxcore\CoreRT\src\System.Private.Interop\src\Shared\McgMarshal.cs at 1189:13
__Interop ComCallHelpers.Call (__ComObject, RuntimeTypeHandle, Int32)
__Interop ForwardComStubs.Stub_10[TThis] (__ComObject, Int32)
Microsoft.AppCenter.Utils ApplicationLifecycleHelper.<ctor>b__17_1 (Object, UnhandledErrorDetectedEventArgs)
The stack doesn't show any code I have written.
How should I interpret this stack and how can I find out which code in my app is causing this? Is the IID of the COM call known?
Appreciate any help!
{count} votes
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Roy Li - MSFT 32,051 Reputation points Microsoft Vendor2020-03-24T06:00:11.177+00:00 I have some questions here. Can you reproduce this? Then will this occur when you run the win32 app and UWP app separately?
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Premiaware di Luca Borriero 26 Reputation points2022-03-23T20:36:25.207+00:00 i have the same issue with UWP App.
Iin App center:
ComCallHelpers.Call ($__ComObject __this, RuntimeTypeHandle __typeHnd, Int32 __targetIndex)
Call at 15732480
Windows.UI.Xaml.Markup.XamlParseException: Impossibile trovare il testo associato a questo codice di errore. Cannot find a Resource with the Name/Key ComboBoxStyleExt [Line: 0 Position: 0]System.Runtime.InteropServices
McgMarshal.ThrowOnExternalCallFailed (Int32 hr, RuntimeTypeHandle typeHnd) f:\dd\ndp\fxcore\CoreRT\src\System.Private.Interop\src\Shared\McgMarshal.cs at 1189:13
__Interop
ComCallHelpers.Call ($__ComObject __this, RuntimeTypeHandle __typeHnd, Int32 __targetIndex) Call at 15732480
__Interop.ForwardComStubs
Stub_12<System.__Canon> (Void* InstParam, $__ComObject __this, Int32 __targetIndex) Stub_12 at 16707566
Microsoft.AppCenter.Utils
ApplicationLifecycleHelper.<ctor>b__17_1 (Object sender, $UnhandledErrorDetectedEventArgs eventArgs)Is impossible to find the issue in code with this information.
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