Outlook add-in post mortem debuggin with procdump

Question

I created a windows forms application that is used in an outlook add-in project created in Visual Studio. Is there anyway using the procdump tool with Visual Studio to step into the exact line of code where an exception is occurring?

I can do this with a regular windows forms application but I'm having no such luck with an outlook addin. When I pull the dump file into Visual Studio under the modules section it does not list my addin anywhere.

Any help appreciated as usual.

---

Watson

Answer 1

if you have memory dump form process where your add-in was actually loaded then that .net code should be there. As for exact line - it depends if you build your binaries with necessary info for that and have corresponding pdb files. (it is done automatically for debug releases, but for 'release' it has to be set on manually).

Answer 2

Ok thank you very much for your reply.

I'm trying to do some post mortem debugging and always get the error - Debuggin information for 'outlook.exe' caannot be found or does not match. Cannot find or open the pdb file.

Is there something I can do to get the pdb files generated for outlook?

You are right, if I match the pdb to the exact build of the published client then it will step into the managed addin. I simply just hit continue when it says it can't find the 'outlook.exe' pdb.

---

Watson

Answer 3

you will not get any pdb files for outlook. Just ignore this error, VS should be able to find pdb files for your code if they are placed in the same dir as dump (it will also look in other places but this is simplest way). If you also have sources placed in the same location where they were when pdb files were built, you will get source code view also. If VS is not able to locagte your pdb files, find your modules right click and choose to load manually pdb files.

Answer 4

I'm trying to debug outlook when it hangs. When I induce the exception with the following:

Thread.Sleep(Infinite); I can get the dump file to jump directly to this line of code.

However, when I don't induce the hang ( it hangs on its own accord ) I get the following stack trace. How do I decipher whats going on?

> ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
  ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
  KERNELBASE.dll!_WaitForMultipleObjectsEx@20()  + 0x100 bytes 
  kernel32.dll!_WaitForMultipleObjectsExImplementation@20()  + 0x8e bytes 
  user32.dll!_RealMsgWaitForMultipleObjectsEx@20()  + 0xe2 bytes 
  ole32.dll!CCliModalLoop::BlockFn(void * * ahEvent, unsigned long cEvents, unsigned long * lpdwSignaled)  Line 1222 C++
  ole32.dll!CoWaitForMultipleHandles(unsigned long dwFlags, unsigned long dwTimeout, unsigned long cHandles, void * * pHandles, unsigned long * lpdwindex)  Line 109 + 0x10 bytes C++
  MSO.DLL!704819f8()  
  [Frames below may be incorrect and/or missing, no symbols loaded for MSO.DLL] 
  MSO.DLL!70397c6a()  
  MSO.DLL!70396d84()  
  MSO.DLL!70be7204()  
  MSO.DLL!70be6bda()  
  WWLIB.DLL!68ce1b25()  
  WWLIB.DLL!68ce1a46()  
  WWLIB.DLL!68c4654d()  
  WWLIB.DLL!68c4650f()  
  WWLIB.DLL!68c33303()  
  WWLIB.DLL!68c33278()  
  WWLIB.DLL!68c33303()  
  WWLIB.DLL!68ca59a0()  
  MSO.DLL!703058af()  
  MSO.DLL!7030be18()  
  MSO.DLL!7030be18()  
  MSO.DLL!7030bb76()  
  MSO.DLL!7030b9fa()  
  MSO.DLL!7030b8aa()  
  MSO.DLL!7030b627()  
  MSO.DLL!70338073()  
  MSO.DLL!70338052()  
  kernel32.dll!_LocalBaseRegQueryValue@24()  + 0x208 bytes 

---

Watson

Answer 5

do you use threads in your add-in? does it also hang if your add-in is not loaded?

Answer 6

Yes I do use threads. Outlook hangs on occassion but I would like to think it is the c# addin that is causing the hang. Is there anything I can do to help resolve where it is hanging?

---

Watson

Answer 7

Accessing the Outlook object model from anything but the main thread in an Outlook COM addin is not supported and will hang Outlook. None of the Office applications supports being accessed from background threads.

 

If you are accessing the Outlook object model from a background thread you must stop doing it.

 

In Outlook 2013 your code would be disabled automatically by Outlook for doing that. The problem is so serious that the product group added special code to disable addins that access the Outlook object model from a background thread.

--
Ken Slovak
[MVP-Outlook]
http://www.slovaktech.com
Author: Professional Programming Outlook 2007

"Blast" <=?utf-8?B?Qmxhc3Q=?=> wrote in message news:4e234c20-81b3-4d32-b4da-043cae014b81...

Yes I do use threads. Outlook hangs on occassion but I would like to think it is the c# addin that is causing the hang.

---

Watson

---

Ken Slovak MVP - Outlook

Answer 8

If you are accessing the Outlook object model from a background thread you must stop doing it.

I'm not sure that this is the problem. My c# addin opens up a windows forms applications. The windows forms does have threads in it but none that call outlook apis. The threads are only used to pull in data in the background.

What steps can I take to make sure this isn't the issue, and then what steps do I take to uncover what the issue actually is?

---

Watson

Answer 9

when you open your dump in VS, open 'Threads' window, you should see there a list of threads, one called VSTA_Main which is main Ui thread where you can access outlook API and bunch of other threads, some yours, some just helper threads without meaning. can you switch to some of your threads and see if they are really not struck somewhere using outlook API? that callstack you sent is for code that waits for something but shows no traces of your code, so we must check other threads.

Answer 10

Unflagged  6580 0 Worker Thread Win32 Thread _ZwWaitForMultipleObjects@20 Normal
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            MSPST32.DLL!6f9efe66()  
            [Frames below may be incorrect and/or missing, no symbols loaded for MSPST32.DLL] 
            user32.dll!_RealMsgWaitForMultipleObjectsEx@20()  + 0xe2 bytes 
            MSO.DLL!70402c7c()  
            OUTLOOK.EXE!2faecfa3()  
            OLMAPI32.DLL!6fbb86c8()  
            OLMAPI32.DLL!6fbb8628()  
            MSO.DLL!70334b37()  
            MSO.DLL!703463c5()  
            MSO.DLL!70316f12()  
            MSO.DLL!70316b74()  
            MSO.DLL!70314072()  
            MSO.DLL!70311502()  
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged > 1092 34 Worker Thread <No Name> _NtWaitForSingleObject@12 Normal
            ntdll.dll!_NtWaitForSingleObject@12()  + 0x15 bytes 
            ntdll.dll!_NtWaitForSingleObject@12()  + 0x15 bytes 
            kernel32.dll!_WaitForSingleObjectExImplementation@12()  + 0x43 bytes 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  2340 0 Worker Thread <No Name> _NtWaitForSingleObject@12 Normal
            ntdll.dll!_NtWaitForSingleObject@12()  + 0x15 bytes 
            ntdll.dll!_NtWaitForSingleObject@12()  + 0x15 bytes 
            kernel32.dll!_WaitForSingleObjectExImplementation@12()  + 0x43 bytes 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  2536 0 Worker Thread <No Name> _ZwWaitForMultipleObjects@20 Normal
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            KERNELBASE.dll!_WaitForMultipleObjectsEx@20()  + 0x36 bytes 
            kernel32.dll!_WaitForMultipleObjectsExImplementation@20()  + 0x8e bytes 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  4620 1 Main Thread VSTA_Main CCliModalLoop::BlockFn Normal
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            KERNELBASE.dll!_WaitForMultipleObjectsEx@20()  + 0x100 bytes 
            kernel32.dll!_WaitForMultipleObjectsExImplementation@20()  + 0x8e bytes 
            user32.dll!_RealMsgWaitForMultipleObjectsEx@20()  + 0xe2 bytes 
            ole32.dll!CCliModalLoop::BlockFn(void * * ahEvent, unsigned long cEvents, unsigned long * lpdwSignaled)  Line 1222 
            ole32.dll!CoWaitForMultipleHandles(unsigned long dwFlags, unsigned long dwTimeout, unsigned long cHandles, void * * pHandles, unsigned long * lpdwindex)  Line 109 + 0x10 bytes 
            MSO.DLL!704819f8()  
            [Frames below may be incorrect and/or missing, no symbols loaded for MSO.DLL] 
            MSO.DLL!70397c6a()  
            MSO.DLL!70396d84()  
            MSO.DLL!70be7204()  
            MSO.DLL!70be6bda()  
            WWLIB.DLL!68ce1b25()  
            WWLIB.DLL!68ce1a46()  
            WWLIB.DLL!68c4654d()  
            WWLIB.DLL!68c4650f()  
            WWLIB.DLL!68c33303()  
            WWLIB.DLL!68c33278()  
            WWLIB.DLL!68c33303()  
            WWLIB.DLL!68ca59a0()  
            MSO.DLL!703058af()  
            MSO.DLL!7030be18()  
            MSO.DLL!7030be18()  
            MSO.DLL!7030bb76()  
            MSO.DLL!7030b9fa()  
            MSO.DLL!7030b8aa()  
            MSO.DLL!7030b627()  
            MSO.DLL!70338073()  
            MSO.DLL!70338052()  
            kernel32.dll!_LocalBaseRegQueryValue@24()  + 0x208 bytes 

Unflagged  4348 0 Worker Thread <No Name> _ZwDelayExecution@8 Normal
            ntdll.dll!_ZwDelayExecution@8()  + 0x15 bytes 
            ntdll.dll!_ZwDelayExecution@8()  + 0x15 bytes 
            KERNELBASE.dll!_SleepEx@8()  + 0x39 bytes 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  5968 2 Worker Thread <No Name> _ZwWaitForMultipleObjects@20 Highest
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            kernel32.dll!_WaitForMultipleObjectsExImplementation@20()  + 0x8e bytes 
            kernel32.dll!_WaitForMultipleObjects@16()  + 0x18 bytes 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  6488 5 Worker Thread <No Name> _ZwWaitForMultipleObjects@20 Normal
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            KERNELBASE.dll!_WaitForMultipleObjectsEx@20()  + 0x36 bytes 
            kernel32.dll!_WaitForMultipleObjectsExImplementation@20()  + 0x8e bytes 
            [Managed to Native Transition] 
            mscorlib.dll!System.Threading.WaitHandle.WaitAny(System.Threading.WaitHandle[] waitHandles, int millisecondsTimeout, bool exitContext) + 0x8b bytes 
            System.Runtime.DurableInstancing.dll!System.Runtime.IOThreadTimer.TimerManager.OnWaitCallback(object state) + 0x2d bytes 
            System.Runtime.DurableInstancing.dll!System.Runtime.ActionItem.DefaultActionItem.Invoke() + 0x76 bytes 
            System.Runtime.DurableInstancing.dll!System.Runtime.ActionItem.CallbackHelper.InvokeWithoutContext(object state) + 0x30 bytes 
            System.Runtime.DurableInstancing.dll!System.Runtime.IOThreadScheduler.ScheduledOverlapped.IOCallback(uint errorCode, uint numBytes, System.Threading.NativeOverlapped* nativeOverlapped) + 0x78 bytes 
            System.Runtime.DurableInstancing.dll!System.Runtime.Fx.IOCompletionThunk.UnhandledExceptionFrame(uint error, uint bytesRead, System.Threading.NativeOverlapped* nativeOverlapped) + 0x39 bytes 
            mscorlib.dll!System.Threading._IOCompletionCallback.PerformIOCompletionCallback(uint errorCode, uint numBytes, System.Threading.NativeOverlapped* pOVERLAP) + 0x74 bytes 
            [Native to Managed Transition] 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  2676 0 Worker Thread Win32 Thread _ZwWaitForMultipleObjects@20 Normal
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 

Unflagged  2156 0 Worker Thread Win32 Thread _ZwWaitForMultipleObjects@20 Normal
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            kernel32.dll!_WaitForMultipleObjectsExImplementation@20()  + 0x8e bytes 
            user32.dll!_RealMsgWaitForMultipleObjectsEx@20()  + 0xe2 bytes 
            user32.dll!_MsgWaitForMultipleObjects@20()  + 0x1f bytes 
            MSO.DLL!70310b39()  
            [Frames below may be incorrect and/or missing, no symbols loaded for MSO.DLL] 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  2148 0 Worker Thread Win32 Thread _ZwWaitForMultipleObjects@20 Normal
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            kernel32.dll!_WaitForMultipleObjectsExImplementation@20()  + 0x8e bytes 
            user32.dll!_RealMsgWaitForMultipleObjectsEx@20()  + 0xe2 bytes 
            user32.dll!_MsgWaitForMultipleObjects@20()  + 0x1f bytes 
            OLMAPI32.DLL!6fbb8726()  
            [Frames below may be incorrect and/or missing, no symbols loaded for OLMAPI32.DLL] 
            OLMAPI32.DLL!6fbb7d23()  
            OLMAPI32.DLL!6fbb86c8()  
            OLMAPI32.DLL!6fbb8628()  
            MSO.DLL!70334b37()  
            MSO.DLL!70316f12()  
            MSO.DLL!70316b74()  
            MSO.DLL!70314072()  
            MSO.DLL!70311502()  
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  6052 0 Worker Thread Win32 Thread _NtUserGetMessage@16 Normal
            user32.dll!_NtUserGetMessage@16()  + 0x15 bytes 
            user32.dll!_NtUserGetMessage@16()  + 0x15 bytes 
            MSO.DLL!7046848b()  
            [Frames below may be incorrect and/or missing, no symbols loaded for MSO.DLL] 
            OUTLOOK.EXE!2f99a529()  
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  2392 0 Worker Thread CRpcThreadCache::RpcWorkerThreadEntry CDllHost::STAWorkerLoop Normal
            user32.dll!_NtUserGetMessage@16()  + 0x15 bytes 
            user32.dll!_NtUserGetMessage@16()  + 0x15 bytes 
            ole32.dll!CDllHost::STAWorkerLoop()  Line 957 + 0x16 bytes 
            ole32.dll!CDllHost::WorkerThread()  Line 825 + 0x5 bytes 
            ole32.dll!DLLHostThreadEntry(void * param)  Line 758 
            ole32.dll!CRpcThread::WorkerLoop()  Line 257 
            ole32.dll!CRpcThreadCache::RpcWorkerThreadEntry(void * param)  Line 63 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  6332 0 Worker Thread Win32 Thread _ZwWaitForMultipleObjects@20 Normal
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            kernel32.dll!_WaitForMultipleObjectsExImplementation@20()  + 0x8e bytes 
            kernel32.dll!_WaitForMultipleObjects@16()  + 0x18 bytes 
            clr.dll!DebuggerRCThread::MainLoop()  + 0x83 bytes 
            clr.dll!DebuggerRCThread::ThreadProc()  + 0xac bytes 
            clr.dll!DebuggerRCThread::ThreadProcStatic()  + 0x45 bytes 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  3628 0 Worker Thread Win32 Thread _ZwDelayExecution@8 Normal
            ntdll.dll!_ZwDelayExecution@8()  + 0x15 bytes 
            ntdll.dll!_ZwDelayExecution@8()  + 0x15 bytes 
            clr.dll!__DangerousSwitchToThread()  + 0x80 bytes 
            clr.dll!__SwitchToThread()  + 0x12 bytes 
            clr.dll!ThreadpoolMgr::GateThreadStart()  + 0x83 bytes 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  2884 0 Worker Thread Win32 Thread _NtWaitForSingleObject@12 Normal
            ntdll.dll!_NtWaitForSingleObject@12()  + 0x15 bytes 
            ntdll.dll!_NtWaitForSingleObject@12()  + 0x15 bytes 
            KERNELBASE.dll!_WaitForSingleObjectEx@12()  + 0x36 bytes 
            kernel32.dll!_WaitForSingleObjectExImplementation@12()  + 0x43 bytes 
            rasman.dll!_RasmanServiceMonitorThread@0()  + 0xbc bytes 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  5364 0 Worker Thread Win32 Thread _NtWaitForWorkViaWorkerFactory@8 Normal
            ntdll.dll!_NtWaitForWorkViaWorkerFactory@8()  + 0x12 bytes 
            ntdll.dll!_NtWaitForWorkViaWorkerFactory@8()  + 0x12 bytes 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  3288 0 Worker Thread Win32 Thread _ZwWaitForMultipleObjects@20 Normal
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            user32.dll!_DispatchClientMessage@24()  + 0x5c bytes 
            kernel32.dll!_WaitForMultipleObjectsExImplementation@20()  + 0x8e bytes 
            user32.dll!_RealMsgWaitForMultipleObjectsEx@20()  + 0xe2 bytes 
            user32.dll!_MsgWaitForMultipleObjects@20()  + 0x1f bytes 
            GdiPlus.dll!BackgroundThreadProc()  + 0x59 bytes 
            GdiPlus.dll!DllRefCountSafeThreadThunk()  + 0x10 bytes 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  5612 0 Worker Thread Win32 Thread _NtWaitForSingleObject@12 Normal
            ntdll.dll!_NtWaitForSingleObject@12()  + 0x15 bytes 
            ntdll.dll!_NtWaitForSingleObject@12()  + 0x15 bytes 
            kernel32.dll!_WaitForSingleObjectExImplementation@12()  + 0x43 bytes 
            kernel32.dll!_WaitForSingleObject@8()  + 0x12 bytes 
            mshtml.dll!65e114de()  
            [Frames below may be incorrect and/or missing, no symbols loaded for mshtml.dll] 
            mshtml.dll!65dfc15e()  
            mshtml.dll!65c6da11()  
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  6904 0 Worker Thread Win32 Thread _ZwWaitForMultipleObjects@20 Normal
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            kernel32.dll!_WaitForMultipleObjectsExImplementation@20()  + 0x8e bytes 
            kernel32.dll!_WaitForMultipleObjects@16()  + 0x18 bytes 
            msiltcfg.dll!WorkerThread()  + 0xd6 bytes 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  6184 0 Worker Thread Win32 Thread _ZwRemoveIoCompletion@20 Above Normal
            ntdll.dll!_ZwRemoveIoCompletion@20()  + 0x15 bytes 
            ntdll.dll!_ZwRemoveIoCompletion@20()  + 0x15 bytes 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            mswsock.dll!_WSPIoctl@44()  + 0x4a90 bytes 
            146a9090() 

Unflagged  6776 0 Worker Thread Win32 Thread _NtUserGetMessage@16 Highest
            user32.dll!_NtUserGetMessage@16()  + 0x15 bytes 
            user32.dll!_NtUserGetMessage@16()  + 0x15 bytes 
            winmm.dll!_mciwindow@4()  + 0x7f bytes 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  4728 0 Worker Thread Win32 Thread _ZwWaitForMultipleObjects@20 Lowest
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            ntdll.dll!_NtWaitForSingleObject@12()  + 0x15 bytes 
            kernel32.dll!_WaitForMultipleObjectsExImplementation@20()  + 0x8e bytes 
            KERNELBASE.dll!_WaitForSingleObjectEx@12()  + 0xcb bytes 

Unflagged  2348 0 Worker Thread Win32 Thread _NtWaitForSingleObject@12 Normal
            ntdll.dll!_NtWaitForSingleObject@12()  + 0x15 bytes 
            ntdll.dll!_NtWaitForSingleObject@12()  + 0x15 bytes 
            mswsock.dll!_WSPSelect@24()  + 0x1bd bytes 
            ws2_32.dll!_select@20()  + 0x9f bytes 
            wininet.dll!74e236f3()  
            [Frames below may be incorrect and/or missing, no symbols loaded for wininet.dll] 
            ntdll.dll!_NtTestAlert@0()  + 0x15 bytes 
            ntdll.dll!_ZwContinue@8()  + 0x12 bytes 
            ntdll.dll!_LdrInitializeThunk@8()  + 0x1a bytes 
            90909090() 

Unflagged  2000 0 Worker Thread Win32 Thread _NtWaitForWorkViaWorkerFactory@8 Normal
            ntdll.dll!_NtWaitForWorkViaWorkerFactory@8()  + 0x12 bytes 
            ntdll.dll!_NtWaitForWorkViaWorkerFactory@8()  + 0x12 bytes 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  6820 0 Worker Thread Win32 Thread _NtUserWaitMessage@0 Normal
            user32.dll!_NtUserWaitMessage@0()  + 0x15 bytes 
            user32.dll!_NtUserWaitMessage@0()  + 0x15 bytes 
            MSO.DLL!70517b72()  
            [Frames below may be incorrect and/or missing, no symbols loaded for MSO.DLL] 
            MSO.DLL!70517a3c()  
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  6624 0 Worker Thread Win32 Thread _ZwWaitForMultipleObjects@20 Normal
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            ntdll.dll!_ZwWaitForMultipleObjects@20()  + 0x15 bytes 
            kernel32.dll!_WaitForMultipleObjectsExImplementation@20()  + 0x8e bytes 
            MSO.DLL!7034cb76()  
            [Frames below may be incorrect and/or missing, no symbols loaded for MSO.DLL] 
            MSO.DLL!70fae023()  
            msxml6.dll!RTF::getText()  
            474f5250() 
            2b3bea50() 
            MSO.DLL!70fab770()  

Unflagged  4916 0 Worker Thread Win32 Thread _NtWaitForSingleObject@12 Normal
            ntdll.dll!_NtWaitForSingleObject@12()  + 0x15 bytes 
            ntdll.dll!_NtWaitForSingleObject@12()  + 0x15 bytes 
            MSO.DLL!7030bb76()  
            [Frames below may be incorrect and/or missing, no symbols loaded for MSO.DLL] 
            MSO.DLL!7033d6ed()  
            WWLIB.DLL!68cb5e04()  
            WWLIB.DLL!68cb5fb3()  
            WWLIB.DLL!68cb8726()  
            WWLIB.DLL!68cb625b()  
            WWLIB.DLL!68cb5cff()  
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  5688 0 Worker Thread Win32 Thread _ZwRemoveIoCompletion@20 Normal
            ntdll.dll!_ZwRemoveIoCompletion@20()  + 0x15 bytes 
            ntdll.dll!_ZwRemoveIoCompletion@20()  + 0x15 bytes 
            System.Data.dll!SNIAsyncWait()  + 0x6e bytes 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  4416 0 Worker Thread CRpcThreadCache::RpcWorkerThreadEntry CROIDTable::WorkerThreadLoop Normal
            ntdll.dll!_ZwDelayExecution@8()  + 0x15 bytes 
            ntdll.dll!_ZwDelayExecution@8()  + 0x15 bytes 
            KERNELBASE.dll!_Sleep@4()  + 0xf bytes 
            ole32.dll!CROIDTable::WorkerThreadLoop(void * param)  Line 1345 
            ole32.dll!CRpcThread::WorkerLoop()  Line 257 
            ole32.dll!CRpcThreadCache::RpcWorkerThreadEntry(void * param)  Line 63 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  6116 0 Worker Thread Win32 Thread _NtWaitForWorkViaWorkerFactory@8 Normal
            ntdll.dll!_NtWaitForWorkViaWorkerFactory@8()  + 0x12 bytes 
            ntdll.dll!_NtWaitForWorkViaWorkerFactory@8()  + 0x12 bytes 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  6328 0 Worker Thread Win32 Thread _NtWaitForWorkViaWorkerFactory@8 Normal
            ntdll.dll!_NtWaitForWorkViaWorkerFactory@8()  + 0x12 bytes 
            ntdll.dll!_NtWaitForWorkViaWorkerFactory@8()  + 0x12 bytes 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  5836 0 Worker Thread Win32 Thread _ZwTraceControl@24 Normal
            ntdll.dll!_ZwTraceControl@24()  + 0x12 bytes 
            ntdll.dll!_ZwTraceControl@24()  + 0x12 bytes 
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!_EtwpNotificationThread@4()  
            ffffffff() 
            146a9090() 

Unflagged  7140 0 Worker Thread Win32 Thread _NtWaitForSingleObject@12 Normal
            ntdll.dll!_NtWaitForSingleObject@12()  + 0x15 bytes 
            ntdll.dll!_NtWaitForSingleObject@12()  + 0x15 bytes 
            kernel32.dll!_WaitForSingleObjectExImplementation@12()  + 0x43 bytes 
            MSPST32.DLL!6f9e6ec0()  
            [Frames below may be incorrect and/or missing, no symbols loaded for MSPST32.DLL] 
            MSPST32.DLL!6fa58093()  
            MSPST32.DLL!6f9ed599()  
            MSPST32.DLL!6f9ed527()  
            MSPST32.DLL!6fafc738()  
            OLMAPI32.DLL!6fbb86c8()  
            OLMAPI32.DLL!6fbb8628()  
            OLMAPI32.DLL!6fbe6f42()  
            MSO.DLL!7034975b()  
            MSO.DLL!703463c5()  
            MSO.DLL!70316f12()  
            MSO.DLL!70316b74()  
            MSO.DLL!70314072()  
            MSO.DLL!70311502()  
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  2224 0 Worker Thread Win32 Thread _NtWaitForSingleObject@12 Normal
            ntdll.dll!_NtWaitForSingleObject@12()  + 0x15 bytes 
            ntdll.dll!_NtWaitForSingleObject@12()  + 0x15 bytes 
            kernel32.dll!_WaitForSingleObjectExImplementation@12()  + 0x43 bytes 
            MSPST32.DLL!6f9e6ec0()  
            [Frames below may be incorrect and/or missing, no symbols loaded for MSPST32.DLL] 
            MSPST32.DLL!6fa58093()  
            MSPST32.DLL!6f9ed599()  
            MSPST32.DLL!6f9ed527()  
            MSPST32.DLL!6fafc738()  
            OLMAPI32.DLL!6fbb86c8()  
            OLMAPI32.DLL!6fbb8628()  
            OLMAPI32.DLL!6fbe6f42()  
            MSO.DLL!7034975b()  
            MSO.DLL!703463c5()  
            MSO.DLL!70316f12()  
            MSO.DLL!70316b74()  
            MSO.DLL!70314072()  
            MSO.DLL!70311502()  
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

Unflagged  4292 0 Worker Thread Win32 Thread _ZwRemoveIoCompletion@20 Normal
            ntdll.dll!_ZwRemoveIoCompletion@20()  + 0x15 bytes 
            ntdll.dll!_ZwRemoveIoCompletion@20()  + 0x15 bytes 
            MSO.DLL!70313feb()  
            [Frames below may be incorrect and/or missing, no symbols loaded for MSO.DLL] 
            MSO.DLL!70311502()  
            kernel32.dll!@BaseThreadInitThunk@12()  + 0x12 bytes 
            ntdll.dll!___RtlUserThreadStart@8()  + 0x27 bytes 
            ntdll.dll!__RtlUserThreadStart@8()  + 0x1b bytes 

 

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Watson

Answer 11

you are burning incredible amounts of threads waiting. What i think is important are 2 threads: vsta_main and right below one which looks like IO completion port. But i;m afraid tht woithout looking at some parts of your source code we will not be able to help you.

Answer 12

Can you copy and paste any suspected threads I should investigate?

Answer 13

threads 4620 and 6488

Answer 14

I don't see your code in the callstack, so I suspect the dump you analyze isn't helpful. You may consider debugging the addin remotely. Install the Visual Studio remote debugger on addin user's computer.

regards,

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Forrest Guo | MSDN Community Support | Feedback to manager