Unknown exception in Windows_UI_Xaml!DirectUI::Application::OnLaunchedProtected

Question

Store certification testing is reporting that my app crashes on startup. I have not been able to reproduce the error on my desktop pc or Surface RT so far. The app does implement search contract. Please have a look at the minidump here.

Update: I have attached a link to the source code, please have a go and see if you can reproduce the error or spot any obvious mistakes!

Instruction at Windows_UI_Xaml!DirectUI::ErrorHelper::ProcessUnhandledErrorForUserCode+7a in Windows.UI.Xaml.dll from Microsoft Corporation has caused an unknown exception (0xc000027b)

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    
ntdll!_RtlUserThreadStart+1b 

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:  & 

Edit: 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?

Answer 1

I had this issue come up after my app was working great. Then all of a sudden this exception would occur every time I ran the app. I found that if I went into "Metro" and Uninstalled the app, the ran it again the issue was resolved. It's apparently a bug in WinRT that once it occurs it gets stuck, and only a uninstall/reinstall will fix it.

My experiences were on my Dev machine, so I don't know if this would fix it in a Production environment, but it should. Hope this helps someone!

UPDATE: I still got this after a little while, and tried on a fresh install of Win8/VS'13 and it occurs there too. This is apparently a bug in WinRT after all.... Now if I can only find a work around...

Answer 2

My app got certified on the next submission. What I discovered was a missing string resource for a label for en-US using the x:Uid directive. By changing to this language on my computer I did get a call stack enabling me to find the missing string. Too bad I didn't save the call stack so I could post it.

Answer 3

I had a same chrash in previous versions of applications, it's a some bug in runtime, it's been resolved in the meantime,

Here are the details with the workaround:

http://answers.flyppdevportal.com/categories/metro/csharpvb.aspx?ID=0dcffd79-3848-4cc3-839d-ab7d3544f80a