Unobserved Task Exception when using MetroLog

[chschafl]

Hi,

I am hitting this unobserved task exception when using MetroLog:

Exception: InnerException = {"Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))"}

StackTrace:

   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.IO.WindowsRuntimeStorageExtensions.<OpenStreamForWriteAsyncCore>d__1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.IO.WindowsRuntimeStorageExtensions.<OpenStreamForWriteAsyncCore>d__1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at MetroLog.FileTarget.<GetWritableStreamForFile>d__8.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at MetroLog.Targets.FileTargetBase.<GetOrCreateStreamWriterForFile>d__28.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at MetroLog.Targets.FileTargetBase.<WriteAsyncCore>d__26.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at MetroLog.Targets.Target.<WriteAsync>d__5.MoveNext()

Any idea?

I am using the logger from multiple threads, is it thread safe?

Thanks, Christian

[chschafl]

Might be similar to https://github.com/onovotny/MetroLog/issues/74?

[Athari]

System.UnauthorizedAccessException occurred Message: Exception thrown: 'System.UnauthorizedAccessException' in System.Runtime.WindowsRuntime.dll Additional information: Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))

>   mscorlib.ni.dll!System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(System.Threading.Tasks.Task task)    Unknown
    mscorlib.ni.dll!System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task task)   Unknown
    System.Runtime.WindowsRuntime.dll!System.IO.WindowsRuntimeStorageExtensions.OpenStreamForWriteAsyncCore(Windows.Storage.IStorageFile windowsRuntimeFile, long offset)   Unknown
    mscorlib.ni.dll!System.Runtime.CompilerServices.AsyncTaskMethodBuilder<System.__Canon>.Start<System.IO.WindowsRuntimeStorageExtensions.<OpenStreamForWriteAsyncCore>d__1>(ref System.IO.WindowsRuntimeStorageExtensions.<OpenStreamForWriteAsyncCore>d__1 stateMachine) Unknown
    System.Runtime.WindowsRuntime.dll!System.IO.WindowsRuntimeStorageExtensions.OpenStreamForWriteAsyncCore(Windows.Storage.IStorageFile windowsRuntimeFile, long offset)   Unknown
    System.Runtime.WindowsRuntime.dll!System.IO.WindowsRuntimeStorageExtensions.OpenStreamForWriteAsync(Windows.Storage.IStorageFile windowsRuntimeFile)    Unknown
    MetroLog.dll!MetroLog.FileTarget.GetWritableStreamForFile(string fileName)  Unknown
    mscorlib.ni.dll!System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.InvokeMoveNext(object stateMachine)   Unknown
    mscorlib.ni.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state)  Unknown
    mscorlib.ni.dll!System.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run() Unknown
    mscorlib.ni.dll!System.Runtime.CompilerServices.AsyncMethodBuilderCore.OutputAsyncCausalityEvents.AnonymousMethod__0()  Unknown
    mscorlib.ni.dll!System.Runtime.CompilerServices.AsyncMethodBuilderCore.ContinuationWrapper.Invoke() Unknown
    mscorlib.ni.dll!System.Runtime.CompilerServices.TaskAwaiter.OutputWaitEtwEvents.AnonymousMethod__0()    Unknown
    mscorlib.ni.dll!System.Runtime.CompilerServices.AsyncMethodBuilderCore.ContinuationWrapper.Invoke() Unknown
    mscorlib.ni.dll!System.Threading.Tasks.AwaitTaskContinuation.RunOrScheduleAction(System.Action action, bool allowInlining, ref System.Threading.Tasks.Task currentTask) Unknown
    mscorlib.ni.dll!System.Threading.Tasks.Task.FinishContinuations()   Unknown
    mscorlib.ni.dll!System.Threading.Tasks.Task.FinishStageThree()  Unknown
    mscorlib.ni.dll!System.Threading.Tasks.Task<System.__Canon>.TrySetResult(System.__Canon result) Unknown
    mscorlib.ni.dll!System.Threading.Tasks.TaskCompletionSource<Windows.Storage.StorageFile>.TrySetResult(Windows.Storage.StorageFile result)   Unknown
    System.Runtime.WindowsRuntime.dll!System.Threading.Tasks.AsyncInfoToTaskBridge<Windows.Storage.StorageFile, System.VoidValueTypeParameter>.Complete(Windows.Foundation.IAsyncInfo asyncInfo, System.Func<Windows.Foundation.IAsyncInfo, Windows.Storage.StorageFile> getResultsFunction, Windows.Foundation.AsyncStatus asyncStatus)    Unknown
    System.Runtime.WindowsRuntime.dll!System.Threading.Tasks.AsyncInfoToTaskBridge<Windows.Storage.StorageFile, System.VoidValueTypeParameter>.CompleteFromAsyncOperation(Windows.Foundation.IAsyncOperation<Windows.Storage.StorageFile> asyncInfo, Windows.Foundation.AsyncStatus asyncStatus)    Unknown

[SirBirne]

Same here. Any news on this issue?

36|2016-05-26T10:19:58.2746895+00:00|ERROR|14|App|UnhandledException --> System.UnauthorizedAccessException: Access is denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)) at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.IO.WindowsRuntimeStorageExtensions.<OpenStreamForWriteAsyncCore>d__1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.IO.WindowsRuntimeStorageExtensions.<OpenStreamForWriteAsyncCore>d__1.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at MetroLog.FileTarget.<GetWritableStreamForFile>d__8.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at MetroLog.Targets.FileTargetBase.<GetOrCreateStreamWriterForFile>d__28.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at MetroLog.Targets.FileTargetBase.<WriteAsyncCore>d__26.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at MetroLog.Targets.Target.<WriteAsync>d__5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at MetroLog.GlobalCrashHandler.<App_UnhandledException>d__1.MoveNext()

[SirBirne]

I want to add: I get the same Exception when i try to open a file which has allready been openend by MetroLog. So I believe that you "double open" a Log file under certain circumstances.

[ViktorBergman]

I've got the same issue but it only occurs when in RELEASE (.Net Native) mode not DEBUG.

[MMalikKhan]

Having same issue in the release mode .. Any hacks or updates on this issue ?

[xmaux72]

+1, on Xamarin Forms UWP