Certification testing: Windows_UI_Xaml!DirectUI::ErrorHelper::ProcessUnhandledErrorForUserCode unknown exception (0xc000027b) RRS feed

  • Question

  • I get this certification failure report: "when our reviewers tried to launch your app failed to launch every time."

    Attached is a minidump:

    combase!RoFailFastWithErrorContextInternal+112 aaaaaaaa aaaaaaaa aaaaaaaa 0056516c d:\win8_gdr\com\combase\winrt\error\error.cpp @ 853
    Windows_UI_Xaml!DirectUI::ErrorHelper::ProcessUnhandledErrorForUserCode+7a aaaaaaaa 005b3bdc 00000000 aaaaaaaa
    Windows_UI_Xaml!DirectUI::Application::OnLaunchedProtected+7b 050726ac aaaaaaaa 0079d280 00000000
    Windows_UI_Xaml!DirectUI::FrameworkView::OnActivated+b3 00798b40 00000000 04b1ee80 6e8f2f42
    Windows_UI_Xaml!`Microsoft::WRL::Callback<Windows::Foundation::IAsyncOperationCompletedHandler<Windows::UI::Xaml::Data::LoadMoreItemsResult>,DirectUI::ListViewBase,Windows::Foundation::IAsyncOperation<Windows::UI::Xaml::Data::LoadMoreItemsResult> *,enum ABI::Windows::Foundation::AsyncStatus>'::`2'::ComObject::Invoke+19 050b45d8 00798b40 005b3bdc 00798b48
    twinapi!Microsoft::WRL::EventSource<Windows::Foundation::ITypedEventHandler<Windows::ApplicationModel::Search::SearchPane *,Windows::ApplicationModel::Search::SearchPaneQueryChangedEventArgs *> >::DoInvoke<`Microsoft::WRL::EventSource<Windows::Foundation::ITypedEventHandler<Windows::ApplicationModel::Search::SearchPane *,Windows::ApplicationModel::Search::SearchPaneQueryChangedEventArgs *> >::InvokeAll<CSearchPaneClient *,CSearchPaneQueryChangedEventArgs *>'::`3'::<lambda_AB69E19221CB48D5> >+48 aaaaaaaa 00798b40 005b3bdc 04b1f0c4 d:\win8_gdr.public.x86fre\sdk\inc\wrl\event.h @ 928 + e
    twinapi!Windows::ApplicationModel::Core::CoreApplicationView::Activate+ab 0079e370 00000000 005b3bdc aaaaaaaa d:\win8_gdr\shell\coreapplication\application\lib\coreapplicationview.cpp @ 874
    rpcrt4!Invoke+2a 6e8dbd11 04b1f0c8 aaaaaaaa aaaaaaaa
    rpcrt4!NdrStubCall2+33b 050cf998 050d3e80 aaaaaaaa 04b1f310
    combase!CStdStubBuffer_Invoke+c1 050cf998 aaaaaaaa 050d3e80 aaaaaaaa d:\win8_gdr\com\combase\ndr\ndrole\stub.cxx @ 1507 + 75caf44b
    combase!SyncStubInvoke+d0 aaaaaaaa aaaaaaaa 00580678 6e8d4430 d:\win8_gdr\com\combase\dcomrem\channelb.cxx @ 1263 + d
    combase!CCtxComChnl::ContextInvoke+213 04b1f4dc 75c2189c 050d3e80 aaaaaaaa d:\win8_gdr\com\combase\dcomrem\ctxchnl.cxx @ 1344 + 96
    KERNELBASE!WaitForMultipleObjectsEx+10b 00000000 00000000 00000010 aaaaaaaa
    user32!RealMsgWaitForMultipleObjectsEx+16b 0058e760 00000000 0058e760 0058e768
    combase!ComInvoke+171 04b1f878 00000000 04b1f840 75c1eb0d d:\win8_gdr\com\combase\dcomrem\channelb.cxx @ 1575
    combase!CComApartment::ASTAHandleMessage+2c aaaaaaaa 007976f0 04b1f904 aaaaaaaa d:\win8_gdr\com\combase\dcomrem\applicationsta.cpp @ 2301
    combase!ASTAWaitContext::Wait+39b 04b1f878 aaaaaaaa 007976f0 aaaaaaaa d:\win8_gdr\com\combase\dcomrem\applicationsta.cpp @ 850
    combase!ASTAWaitInNewContext+78 aaaaaaaa aaaaaaaa 00000000 75c0d900 d:\win8_gdr\com\combase\dcomrem\applicationsta.cpp @ 2547 + 14
    combase!ASTAThreadWaitForHandles+4a 00000000 aaaaaaaa 00000000 007976f0 d:\win8_gdr\com\combase\dcomrem\applicationsta.cpp @ 2773 + 36
    combase!CoWaitForMultipleHandles+a4 00000008 aaaaaaaa aaaaaaaa 007976f0 d:\win8_gdr\com\combase\dcomrem\sync.cxx @ 120 + 65
    twinapi!`Windows::ApplicationModel::Core::CoreApplicationViewAgileContainer::RuntimeClassInitialize'::`55'::<lambda_A2234BA2CCD64E2C>::operator()+39 00000000 04b1f9c8 750d5a10 007976d0 d:\win8_gdr\shell\coreapplication\application\lib\coreapplicationview.cpp @ 552
    twinapi!`Windows::ApplicationModel::Core::CoreApplicationViewAgileContainer::RuntimeClassInitialize'::`55'::<lambda_A2234BA2CCD64E2C>::<helper_func>+e 007976d0 00000000 00000000 001beeb4 d:\win8_gdr\shell\coreapplication\application\lib\coreapplicationview.cpp @ 613 + e
    SHCore!SHWaitForThreadWithWakeMask+13b aaaaaaaa 04b1fa18 77c8ac69 001beeb4
    kernel32!BaseThreadInitThunk+e 001beeb4 aaaaaaaa 00000000 00000000
    ntdll!__RtlUserThreadStart+72 750d5931 001beeb4 aaaaaaaa 77d01d8e

    Exception Information

    In TRIAGE~1.DMP the assembly instruction at Windows_UI_Xaml!DirectUI::ErrorHelper::ProcessUnhandledErrorForUserCode+7ain Windows.UI.Xaml.dllfrom Microsoft Corporationhas caused an unknown exception (0xc000027b)on thread 6

    Module Information

    Image Name: Windows.UI.Xaml.dll Symbol Type: PDB
    Base address: 0x00905a4d Time Stamp: Thu Sep 20 06:25:43 2012
    Checksum: 0x00000000 Comments:
    COM DLL: False Company Name: Microsoft Corporation
    ISAPIExtension: False File Description: Windows.UI.Xaml dll
    ISAPIFilter: False File Version: 6.2.9200.16420 (win8_gdr.120919-1813)
    Managed DLL: False Internal Name: Windows.UI.Xaml.dll
    VB DLL: False Legal Copyright: © Microsoft Corporation. All rights reserved.
    Loaded Image Name: Windows.UI.Xaml.dll Legal Trademarks:
    Mapped Image Name: c:\symcache\Windows.UI.Xaml.dll\505A9AC7a54000\Windows.UI.Xaml.dll Original filename: Windows.UI.Xaml.dll
    Module name: Windows_UI_Xaml Private Build:
    Single Threaded: False Product Name: Microsoft® Windows® Operating System
    Module Size: 10,33 MBytes Product Version: 6.2.9200.16420
    Symbol File Name: c:\symcache\windows.ui.xaml.pdb\F3AFE9A212494DCAB4068DD4A4A781232\windows.ui.xaml.pdb Special Build: &

    It is hard to tell what functionality is causing this and I am not able to reproduce the error locally on pc or tablet. I will see if I can enable low-resource testing environment but I don't think this is the offender. Is this a know issue?

    Please have a look at the minidump here.


    Thursday, February 21, 2013 1:41 PM

All replies

  • I was able to make the app crash locally by enabling LuaPriv in Application Verifier. If i disable it it does not crash. I am not sure this is the same crash because I am running into an issue where AppVerif can not write logs. Any help? Do certification testers run with LuaPriv? I am trying to figure out how to run Standard User Analyzer on my app, any hints how to do this? My app does write to ApplicationData.Current.RoamingSettings with an implementation of IsolatedStorageHelper I found somewhere. Is this an issue?


    Thursday, February 21, 2013 10:13 PM
  • Hi,

    Could you please provide the project that can reproduce the issue?

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    Monday, February 25, 2013 8:38 AM
  • Thanks for the reply. I have provided a link to my project and hope you might have a look at it. I have removed some of the data content, if this changes the behavior I will share a private link to the app as it was last submitted.

    Best regards,



    Tuesday, February 26, 2013 8:54 PM
  • Please see the attached minidump in the original post. Previously the Edit and Add functionality was located in separate LayoutAware pages. Certification failure reported that clicking these buttons did not work, i.e. the buttons responded but navigation did not take place. I then redesigned the app so that this functionality is located on the main page, implemented as overlays on the same page. Now they report that the app crashes on startup. Since they previously supplied screenshots of the main screen with data items loaded I do not think deserialization, data size or virtualization of the 200+ items is the offender. I am thinking threading or localization might be hot candidates but I have not been able to reproduce any issues. I have had several people sideload the app for testing.



    Wednesday, February 27, 2013 12:08 AM
  • Hi,

    I'll try to involve more experts in this case.

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    Wednesday, February 27, 2013 7:18 AM
  • I really hope you are able to find anything. If not I might have to abandon the project as I am running out of leads. I did find one potential fault: The Application.RequestedTheme was set in xaml and I read that only Resources can be set declaratively. Unfortunately if failed certification after changing this. Here is a new minidump, similar to the previous one. What bothers me is that it seems none of my code is being run now. Previously, before i redesigned the Add and Edit-functions the app did run to the main page. In the minidump I see a mention of SearchPaneQueryChangedEventArgs before the crash but I find it hard to relate to the previous malfunction before redesign. And again, why would this not crash on my computers? I might disable the search contract and make another release, as I have no other leads.

    Are there any other issues related to running apps on developer caomputers? All the machines I have tested on are, naturally, developer unlocked.

    - Eivind


    Thursday, February 28, 2013 12:24 PM
  • Any success?


    Sunday, March 3, 2013 11:51 PM
  • Hi Aaron,

    did you get any response on this issue? 



    Monday, March 18, 2013 8:25 PM
  • Have any other cases like this surfaced? I am still non the wiser as to the cause.


    Saturday, April 13, 2013 2:21 PM