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Microsoft Graph API timeout exception

I'm using Microsoft Graph API library (C#) and wondering if anyone has experienced this:
Many of my graph API calls time out from time to time.
This can happen to any API call, from getting current user profile to getting sharepoint documents, and so on.
I've tried updating Microsoft Graph API and dependent Nuget packages to the latest versions, but it doesn't help.
To clarify, this application is a Windows console application. On Azure side, it is registered as a native application. As a test application, it is a single-threaded application. No concurrency, race conditions involved. Code logic is as simple as
User logs in.
The program makes a Graph API call (shown in eg.1) to get user's profile and this API call times out.
eg 1.
var currentUser = graphClient.Me.Request().GetAsync().Result;
eg 2.
var site = _graphClient.Sites[SharePointSiteId].Request().GetAsync().Result;
The symptom is after a minute or two, it throws an AggregationException(because of TPL) which includes a TimeOutException.
No unauthorized exception.
I want to know what could be the possible cause and how I can avoid that.
UPDATE:
Here's a screenshot when the exception happens.
UPDATE 2:
I've tried replacing all the API calls to use "await" directly to wait for results. because this example code is a console application. I put
static void Main(string[] args)
{
// using Stephen Cleary's nuget package: Nito.AsyncEx.Tasks
MainImp().WaitAndUnwrapException();
}
static async Task MainImp()
{
// ...
// Graph API calls
This exception is still thrown from this simple API call:
var currentUser = await graphClient.Me.Request().GetAsync();
An unhandled exception of type 'Microsoft.Graph.ServiceException' occurred in mscorlib.dll
Additional information: Code: timeout
Here's the full call stack
at Microsoft.Graph.HttpProvider.d__19.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 Microsoft.Graph.HttpProvider.d__18.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
Microsoft.Graph.BaseRequest.d__35.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 Microsoft.Graph.BaseRequest.d__311.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 Microsoft.Graph.UserRequest.<GetAsync>d__6.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 System.Runtime.CompilerServices.TaskAwaiter1.GetResult()
at SharePointConsoleApp.Program.d__14.MoveNext() in
D:\TestProjects\SharePointConsoleApp\Program.cs:line 133
--- 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
Nito.AsyncEx.Synchronous.TaskExtensions.WaitAndUnwrapException(Task
task) at SharePointConsoleApp.Program.Main(String[] args) in
D:\TestProjects\SharePointConsoleApp\Program.cs:line 50 at
System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[]
args) at System.AppDomain.ExecuteAssembly(String assemblyFile,
Evidence assemblySecurity, String[] args) at
Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext
executionContext, ContextCallback callback, Object state, Boolean
preserveSyncCtx) at
System.Threading.ExecutionContext.Run(ExecutionContext
executionContext, ContextCallback callback, Object state, Boolean
preserveSyncCtx) at
System.Threading.ExecutionContext.Run(ExecutionContext
executionContext, ContextCallback callback, Object state) at
System.Threading.ThreadHelper.ThreadStart()

First of all if it's an application with user interaction you should never do blocking (.Wait() or .Result) calls on the main thread, this will lock-up your application for further user interaction.
So you need to start by using async code, this is a sample of an async Button_Click handler. It will give you a warning, but this seems to be one of the use-cases of an async void.
private async void Button_Click(object sender, RoutedEventArgs
{
var currentUser = await graphClient.Me.Request().GetAsync();
// Presumably do something with the response
labelUser.Text = currentUser.DisplayName;
}
Few days ago I found a nice video about common async/await mistakes
You seem to be talking about a console app running on windows.
As of C# 7.1 you can also have an public static Task Main(string[] args) as starting point. Then your application would look like this:
public static async Task Main(string[] args) {
// Create the client here.....
var graphClient = .....;
// Await every call to the graphclient
var currentUser = await graphClient.Me.Request().GetAsync();
// Do something with the user
}

Maybe the reponse(payload) you get is very huge that while it processes the request times out? I had this issue frequently a while back while I was fiddling with graph api so i used pagination to limit the size/quantity of items sent back by it.

I've just experienced this and the cause was a corporate firewall was blocking traffic to graph.microsoft.com:443
This can be seen in wireshark as [TCP Retransmission]s after the initial request.
Unblocking this host resolved this issue for me.

Async code in async event handler causing problems

My WPF application consists of a main TabControl which renders multiple plugins, loaded via MEF. Technically, the ICollectionView of the plugins-collection is bound to the ItemsSource-property of the main TabControl. The IsSynchronizedWithCurrentItem-property is also set to True to keep track of the currently selected tab item.
To initialize the plugins, I subscribe the CurrentChanged-event of the ICollectionView to initialize the selected plugin via lazy loading. Since lots of the initialization tasks are async, I also declared the event handler as async.
private ICollectionView pluginsCv;
public ICollectionView PluginsCv
{
get
{
if (pluginsCv == null)
{
pluginsCv = CollectionViewSource.GetDefaultView(Plugins);
pluginsCv.CurrentChanged += async (sender, args) =>
{
await LoadCurrentSection();
};
}
return pluginsCv;
}
}
Tasks of the LoadCurrentSection-method:
Check if data was already loaded before.
If not, initialize the currently selected plugin, inter alia, reading data via EntityFramework.
LoadCurrentSection-method:
private async Task LoadCurrentSection()
{
// If no tab is selected, select the first one
if (PluginsCv.CurrentItem == null)
{
// Comment for stackoverflow: Another raise of the CurrentChanged-event does not seem to be the cause. Tried to prevent another execution of LoadCurrentSection via a bool flag, an stayed in this method (no return statement). Same result.
PluginsCv.MoveCurrentToFirst();
return;
}
// Get the ViewModel of the currently selected section/plugin
var pluginViewModel = ((IPlugin)PluginsCv.CurrentItem).PluginElement.DataContext as ISettlementScheduleSection;
// Initialize currently selected section/plugin
if (pluginViewModel != null && !pluginViewModel.DataLoaded)
await pluginViewModel.LoadData();
}
LoadData-method of the plugin:
public override async Task LoadData()
{
// ...
Costs = await costsService.GetCosts(SubProjectId, UnitTypeId);
// ...
}
Every plugin holds it's own instances of service-classes for crud operations. Those disposable service classes hold and instance of the db-Context.
Little example:
public class CostsService : ServiceBase
{
public CostsService()
: base()
{ }
public CostsService(MyDbContext db)
{
this.Context = db ?? throw new ArgumentNullException(nameof(db));
}
public async Task<IEnumerable<CostsDefinition>> GetCosts(Guid subProjectId, Guid unitTypeId)
{
return await Context.CostsDefinitions.Where(cd => cd.SubProjectId == subProjectId
&& cd.UnitTypeId == unitTypeId)
.OrderBy(cd => cd.Year).ThenBy(cd => cd.Month)
.ToListAsync();
}
}
The db-context (Context-property) is not static and is also not shared between the plugins.
The Problem: Sometimes, but not always, this way to initialize the plugins causes a System.NotSupportedException: A second operation started on this context before a previous asynchronous operation completed. Use 'await' to ensure that any asynchronous operations have completed before calling another method on this context. Any instance members are not guaranteed to be thread safe. WPF seems to raise that event multiple times. To me it is unclear in what scenarios it gets raised. When the ICollectionView is first bound to the TabControl and the first item gets automatically selected? Also when I load and insert more plugins into the source collection? ...
Frequency of the bug: In this case, timing seems to play are role. The frequency of that bug changes when running without debugging or under different network conditions.
Workaround attempt: I tried to filter additional/unnecessary calls of the CurrentChanged-handler via a bool flag, but it didn't help in all cases. I just reduced the frequency a bit. I also tried to delegate every access to PluginsCv to the Dispatcher, but it didn't help. Also, I wrote debug information when pluginsCv is null. And I got that information only once, so the CurrentChanged-event must also be subscribed only once.
Exception details:
Source of exception: "EntityFramework"
Stacktrace:
at System.Data.Entity.Internal.ThrowingMonitor.EnsureNotEntered()
at System.Data.Entity.Core.Objects.ObjectQuery`1.System.Data.Entity.Infrastructure.IDbAsyncEnumerable<T>.GetAsyncEnumerator()
at System.Data.Entity.Internal.Linq.InternalQuery`1.GetAsyncEnumerator()
at System.Data.Entity.Infrastructure.DbQuery`1.System.Data.Entity.Infrastructure.IDbAsyncEnumerable<TResult>.GetAsyncEnumerator()
at System.Data.Entity.Infrastructure.IDbAsyncEnumerableExtensions.ForEachAsync[T](IDbAsyncEnumerable`1 source, Action`1 action, CancellationToken cancellationToken)
at System.Data.Entity.Infrastructure.IDbAsyncEnumerableExtensions.ToListAsync[T](IDbAsyncEnumerable`1 source, CancellationToken cancellationToken)
at System.Data.Entity.Infrastructure.IDbAsyncEnumerableExtensions.ToListAsync[T](IDbAsyncEnumerable`1 source)
at System.Data.Entity.QueryableExtensions.ToListAsync[TSource](IQueryable`1 source)
at xyz.desk.app.ccm.business.Service.CostsService.<GetCosts>d__7.MoveNext() in D:\Dev\ThatCrazyPluginProject\desk\app\xyz.desk.app.ccm.business\Service\CostsService.cs:line 89
--- 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 System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at xyz.desk.app.ccm.plugin.costplan.constructionprogress.ViewModel.ContructionProgressCostPlanViewModel.<LoadData>d__58.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 System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at xyz.desk.app.ccm.plugin.settlementscheduleshost.ViewModel.SettlementSchedulesHostViewModel.<LoadCurrentSection>d__67.MoveNext() in D:\Dev\ThatCrazyPluginProject\desk\app\xyz.desk.app.ccm.ui\ViewModel\SettlementSchedulesHostViewModel.cs:line 307
--- 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 System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at xyz.desk.app.ccm.plugin.settlementscheduleshost.ViewModel.SettlementSchedulesHostViewModel.<LoadData>d__65.MoveNext() in D:\Dev\ThatCrazyPluginProject\desk\app\xyz.desk.app.ccm.ui\ViewModel\SettlementSchedulesHostViewModel.cs:line 282
--- 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 System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at xyz.desk.app.ccm.ui.ViewModel.ProjectViewModel.<LoadCurrentSection>d__115.MoveNext() in D:\Dev\ThatCrazyPluginProject\desk\app\xyz.desk.app.ccm.ui\ViewModel\ProjectViewModel.cs:line 763
--- 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 System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at xyz.desk.app.ccm.ui.ViewModel.ProjectViewModel.<<get_PluginsCv>b__21_0>d.MoveNext() in D:\Dev\ThatCrazyPluginProject\desk\app\xyz.desk.app.ccm.ui\ViewModel\ProjectViewModel.cs:line 120
Any ideas to solve this issue?

Typical race condition.
Lets consider this scenario
Thread1 - Access PluginsCv
PluginsCv is null so register CurrentChanged
Thread2 - Access PluginsCv
PluginsCv is null so register CurrentChanged
Later...
CurrentChanged fires
Thread1 - await LoadCurrentSection
Thread2 - await LoadCurrentSection
Thread2 "Wait! Thread1 is doing LoadCurrentSection too and its not done yet! Error! Error!"

Owin SelfHost WebApi - client closing the connection during response raises an exception?

I'm running an Owin Selfhost based WebApi where i've put in an API unhandled exception logger via
config.Services.Add(typeof(IExceptionLogger), _apiExceptionLogger);
Relevant part of ApiExceptionLogger:
public override void Log(ExceptionLoggerContext context)
{
if (context == null || context.ExceptionContext == null) return;
Logger.Error("Unhandled exception from Web API", context.ExceptionContext.Exception);
}
The cases it's catching and logging regularly are ones where the client requests a dataset and then closes the connection while the results (JSON) are being sent back - people making a request in chrome, and then hitting the X button before all results come back :P
I've pasted a stacktrace below for completeness, just want to know two things:
Is this regular/expected behavior? AFAIK it is...I'm running a pretty default API and pipeline
Is there any way to handle this? Essentially stop request processing more gracefully in case of a cancellation (the cancellation tokens peppered throughout the request pipeline do come to mind, but doesn't look like they do much in this case, after all the tokens only support co-operative cancellation)
I haven't done any deep dive on the sequence of events happening at the socket level, so far this is only a logging nuisance.
System.Net.Http.HttpRequestException: Error while copying content to a stream. ---> System.IO.IOException ---> System.Net.HttpListenerException: The I/O operation has been aborted because of either a thread exit or an application request
at System.Net.HttpResponseStream.EndWrite(IAsyncResult asyncResult)
at Microsoft.Owin.Host.HttpListener.RequestProcessing.ExceptionFilterStream.EndWrite(IAsyncResult asyncResult)
--- End of inner exception stack trace ---
at Microsoft.Owin.Host.HttpListener.RequestProcessing.ExceptionFilterStream.EndWrite(IAsyncResult asyncResult)
at System.Threading.Tasks.TaskFactory`1.FromAsyncCoreLogic(IAsyncResult iar, Func`2 endFunction, Action`1 endAction, Task`1 promise, Boolean requiresSynchronization)
--- End of inner exception stack trace ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Web.Http.Owin.HttpMessageHandlerAdapter.<SendResponseContentAsync>d__20.MoveNext() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Web.Http.Owin.HttpMessageHandlerAdapter.<SendResponseContentAsync>d__20.MoveNext()

I had a similar issue with Owin host on Raspberry Pi. This may help https://stackoverflow.com/a/30583109/1786034

Its code issue
Read file async and check.At any time if you are doing an api call and it times out it will definitely throw exception.
using (StreamReader reader = new StreamReader(await selectedFile.OpenStreamForReadAsync()))
{
while ((nextLine = await reader.ReadLineAsync()) != null)
{
contents.AppendFormat("{0}. ", lineCounter);
contents.Append(nextLine);
contents.AppendLine();
lineCounter++;
if (lineCounter > 3)
{
contents.AppendLine("Only first 3 lines shown.");
break;
}
}
}

MobileServiceInvalidOperationException When Trying To Retrieve Data From Azure

This is the method i am using.
try
{
List<Patient> pList = await App.MobileService.GetTable<Patient>().Where(
patient => patient.id == 1).ToListAsync();
foreach (Patient p in pList)
{
System.Diagnostics.Debug.WriteLine("{0}, {1}", p.id, p.first_name);
}
}
catch (Exception err)
{
System.Diagnostics.Debug.WriteLine("ERROR! : {0}", err.Message);
}
Here's the Patient entity.
class Patient
{
public int id { get; set; }
public string first_name { get; set; }
public string last_name { get; set; }
public string middle_name { get; set; }
public string nirc { get; set; }
public int bed_id { get; set; }
}
Here's the error i am getting.
An exception of type 'System.Net.WebException' occurred in System.Windows.ni.dll and wasn't handled before a managed/native boundary
An exception of type 'System.Net.WebException' occurred in System.Windows.ni.dll and wasn't handled before a managed/native boundary
An exception of type 'System.Net.WebException' occurred in mscorlib.ni.dll and wasn't handled before a managed/native boundary
An exception of type 'Newtonsoft.Json.JsonReaderException' occurred in Newtonsoft.Json.DLL and wasn't handled before a managed/native boundary
An exception of type 'Microsoft.WindowsAzure.MobileServices.MobileServiceInvalidOperationException' occurred in Microsoft.Azure.Zumo.WindowsPhone8.Managed.DLL and wasn't handled before a managed/native boundary
An exception of type 'Microsoft.WindowsAzure.MobileServices.MobileServiceInvalidOperationException' occurred in mscorlib.ni.dll and wasn't handled before a managed/native boundary
An exception of type 'Microsoft.WindowsAzure.MobileServices.MobileServiceInvalidOperationException' occurred in mscorlib.ni.dll and wasn't handled before a managed/native boundary
An exception of type 'Microsoft.WindowsAzure.MobileServices.MobileServiceInvalidOperationException' occurred in mscorlib.ni.dll and wasn't handled before a managed/native boundary
A first chance exception of type 'Microsoft.WindowsAzure.MobileServices.MobileServiceInvalidOperationException' occurred in mscorlib.ni.dll
An exception of type 'Microsoft.WindowsAzure.MobileServices.MobileServiceInvalidOperationException' occurred in mscorlib.ni.dll and wasn't handled before a managed/native boundary
When i wrap my method within a TryCatch, i get this message
Error : The request could not be completed. ()
Here's the stack error message
at Microsoft.WindowsAzure.MobileServices.MobileServiceClient.CreateMobileServiceException(String errorMessage, IServiceFilterRequest request, IServiceFilterResponse response)
at Microsoft.WindowsAzure.MobileServices.MobileServiceClient.ThrowInvalidResponse(IServiceFilterRequest request, IServiceFilterResponse response, JToken body)
at Microsoft.WindowsAzure.MobileServices.MobileServiceClient.<RequestAsync>d__f.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 System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at Microsoft.WindowsAzure.MobileServices.MobileServiceTable.<SendReadAsync>d__0.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 System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at Microsoft.WindowsAzure.MobileServices.MobileServiceTable`1.<EvaluateQueryAsync>d__3`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 System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at Microsoft.WindowsAzure.MobileServices.MobileServiceTableQuery`1.<ToListAsync>d__2.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 System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at PhoneApp1.MainPage.<populate>d__0.MoveNext()
A few points to note.
Permission is set to Anybody with the Application Key
I've added reference to Windows Azure Mobile Services Managed Client
I've already inserted this code within App.XAML.CS. using Microsoft.WindowsAzure.MobileServices;
I've already placed this piece of code acquired from this website within App.XAML.CS.
public static MobileServiceClient MobileService = new MobileServiceClient( AppUrl, AppKey );
Why am i unable to connect to my database? I've tried running these codes on a Windows Store Application and it worked. Previously i've done the exact same thing and it worked as well.

This link saved me.
Apparently, all i had to do is to change the service address from https to http. So instead of this,
public static MobileServiceClient MobileService = new MobileServiceClient(
"https://www.example.azure-mobile.net/",
"fjkdslajkfdlsref31321fgdsat34ajklfdslajfkldsa"
);
Change it to
public static MobileServiceClient MobileService = new MobileServiceClient(
"http://www.example.azure-mobile.net/",
"fjkdslajkfdlsref31321fgdsat34ajklfdslajfkldsa"
);
Problem solved.

Check the date / time on your computer or the device. In my case I had powered on a dev phone that had been off for some time and the date / time was completely wrong. While changing the endpoint from HTTPS to HTTP does work around the issue, for me the proper solution was to keep HTTPS and fix the date / time on the device.

I solved this problem in my Android devices. You will need kill your app instance, change the system date/time to current and reopen the app.
Thanks Nathanial Woolls!!!

I can't comment because of my low reputation, I'm experiencing the same problem, but it's inconsistent.
If I try to use the registration page on my app that hits an Azure Mobile Service, sometimes it times out with the same error ("The request could not be completed. ()"), then if I try again immediately it works fine.
I'm using an actual Windows Phone Device and it's connected using Wi-Fi provided by my iPhone's hotspot which is actually 4G so there's definitely not a connection issue.
I read other articles that said there's no point trying to check if an internet connection is available, just try and send the data and deal with any issues. I deal with the issue but the issue shouldn't be happening.
Did you experience any more problems?
I've tried using https and http for the MobileService connection, doesn't seem to make any difference.

In case anyone else runs into this, I experienced the same issue when I simply had simply passed a URL with an incorrect subdomain to MobileServiceClient.
For instance, something like this:
public static MobileServiceClient MobileService = new MobileServiceClient(
"http://www.example.azure-mobile.net/",
"fjkdslajkfdlsref31321fgdsat34ajklfdslajfkldsa"
);

Make sure that also this is turned off.

Recording PCM on Windows Phone 8 using AudioVideoCaptureDevice

The following code correctly records audio recorded from my Windows Phone 8 device to isolated storage using the AMR and AAC formats. However, when I try to record the PCM format the app crashes with the error:
Value does not fall within the expected range.
Windows.Phone.Media.Capture.AudioVideoCaptureDevice.StartRecordingToStreamAsync(IRandomAccessStream stream)
at WP8.Classes.AudioCaptureController.<StartRecordingAsync>d__3.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 System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at WP8.ViewModels.CameraPageViewModel.<capture>d__13.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 System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at WP8.ViewModels.CameraPageViewModel.<TakePictureAsync>d__6.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.<ThrowAsync>b__0(Object state)
The code I have working is as follows:
private AudioVideoCaptureDevice mic;
private IRandomAccessStream sst;
private string path;
public async Task MicStartAsync()
{
mic = await AudioVideoCaptureDevice.OpenForAudioOnlyAsync();
mic.AudioEncodingFormat = CameraCaptureAudioFormat.Pcm;
}
public async Task StartRecordingAsync()
{
IsolatedStorageAccess iso = new IsolatedStorageAccess();
sst = await iso.SetUpFileStreamForSavingAudioAsync("123.pcm");
await mic.StartRecordingToStreamAsync(sst);
path = iso.Path;
}
public async Task StopRecordingAsync()
{
await mic.StopRecordingAsync();
sst.AsStream().Dispose();
new MediaPlayerLauncher()
{
Media = new Uri(path, UriKind.Relative)
}.Show();
}
}
}
changing the format to anything other than pcm works!
UPDATE: For some reason it now seems to avoid crashing but this is shown in the output:
A first chance exception of type 'System.ArgumentException' occurred in WP8.DLL
An exception of type 'System.ArgumentException' occurred in WP8.DLL and wasn't handled before a managed/native boundary
(WP8 is the name of my dll) The code carries on as normal after this and only crashes when I go to stop the recording where it says the recording never started and the AudioVideoCaptureDevice is in an incorrect state
I have also tried using var AudioVideoCaptureDevice.SupportedAudioEncodingFormats; to check that Pcm is available which it is

you can record from the mic using XNA framework (it seems to that microsoft have an error in there framework when writing data to the file!)
Take a look at this code Microphone Sample and this article for saving data in a wav format Saving Microphone stream to wave format in Windows Phone from Nokia developer portal!