Could not load file or assembly 'Microsoft.IdentityModel.Clients.ActiveDirectory

#### Investigative information

Please provide the following:

- Timestamp: 2018-02-01T16:15:00.0130000Z
- Function App version 2.0-beta
- Function App name:
- Function name(s) (as appropriate):
- Invocation ID: f17310a1-65a3-4468-a706-acc511fb9449
- Region: North Europe

#### Repro steps

Provide the steps required to reproduce the problem:
I'm using Microsoft.IdentityModel.Clients.ActiveDirectory nuget package version 3.19.1 to connect authenticate to Azure Batch

The auth code is :

public static async Task GetAuthenticationTokenAsync(string tenantId, string clientId, string clientKey)
{
AuthenticationContext authContext = new AuthenticationContext(_AuthorityUri + tenantId);
AuthenticationResult authResult = await authContext.AcquireTokenAsync(_BatchResourceUri, new ClientCredential(clientId, clientKey));

return authResult.AccessToken;
}

Exception message is :

`Exception while executing function: GetTaskCounts Could not load file or assembly 'Microsoft.IdentityModel.Clients.ActiveDirectory, Version=3.19.1.3001, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Could not find or load a specific file. (Exception from HRESULT: 0x80131621) Could not load file or assembly 'Microsoft.IdentityModel.Clients.ActiveDirectory, Version=3.19.1.3001, Culture=neutral, PublicKeyToken=31bf3856ad364e35'.`

Whenever this code is called there is an exception being raised with the below stack

`Microsoft.Azure.WebJobs.Host.FunctionInvocationException:
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+d__16.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.csMicrosoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 320)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+d__13.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.csMicrosoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 96)
Inner exception System.IO.FileLoadException handled at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw:
at BatchHelpers.Auth.GetAuthenticationTokenAsync (BatchHelpers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null)
at BatchMonitorFunctions.GetTaskCounts+<>c.b__0_0 (BatchMonitorFunctions, Version=1.0.0.0, Culture=neutral, PublicKeyToken=nullBatchMonitorFunctions, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: C:\Users\xpillons\Source\Repos\nemo\CloudCompute\BatchMonitorFunctions\GetTaskCounts.csBatchMonitorFunctions, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: 23)
at Microsoft.Azure.Batch.Protocol.BatchTokenProvider+d__5.MoveNext (Microsoft.Azure.Batch, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Rest.TokenCredentials+d__17.MoveNext (Microsoft.Rest.ClientRuntime, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Batch.Protocol.JobOperations+d__14.MoveNext (Microsoft.Azure.Batch, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Batch.Protocol.BatchRequestBase`2+d__42.MoveNext (Microsoft.Azure.Batch, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Batch.Protocol.BatchRequestBase`2+d__40.MoveNext (Microsoft.Azure.Batch, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Batch.Protocol.BatchRequestBase`2+d__40.MoveNext (Microsoft.Azure.Batch, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Batch.ProtocolLayer+d__85`1.MoveNext (Microsoft.Azure.Batch, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Batch.AsyncListJobsEnumerator+d__8.MoveNext (Microsoft.Azure.Batch, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Batch.PagedEnumeratorBase`1+d__11.MoveNext (Microsoft.Azure.Batch, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.Batch.PagedEnumeratorBase`1.MoveNext (Microsoft.Azure.Batch, Version=8.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
at BatchHelpers.MonitorOperations+d__4.MoveNext (BatchHelpers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=nullBatchHelpers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: C:\Users\xpillons\Source\Repos\nemo\CloudCompute\BatchHelpers\MonitorOperations.csBatchHelpers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: 34)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at BatchMonitorFunctions.GetTaskCounts+d__0.MoveNext (BatchMonitorFunctions, Version=1.0.0.0, Culture=neutral, PublicKeyToken=nullBatchMonitorFunctions, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: C:\Users\xpillons\Source\Repos\nemo\CloudCompute\BatchMonitorFunctions\GetTaskCounts.csBatchMonitorFunctions, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null: 37)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.WebJobs.Host.Executors.VoidTaskMethodInvoker`2+d__2.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\VoidTaskMethodInvoker.csMicrosoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 20)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.WebJobs.Host.Executors.FunctionInvoker`2+d__9.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionInvoker.csMicrosoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 63)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+d__24.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.csMicrosoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 583)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+d__23.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.csMicrosoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 534)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+d__22.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.csMicrosoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 477)
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor+d__16.MoveNext (Microsoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=nullMicrosoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.csMicrosoft.Azure.WebJobs.Host, Version=3.0.0.0, Culture=neutral, PublicKeyToken=null: 264)
Inner exception System.IO.FileLoadException handled at BatchHelpers.Auth.GetAuthenticationTokenAsync:
at System.Runtime.Loader.AssemblyLoadContext.LoadFromPath (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Runtime.Loader.AssemblyLoadContext.LoadFromAssemblyPath (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Reflection.Assembly.LoadFrom (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.Reflection.Assembly.LoadFromResolveHandler (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)
at System.AppDomain.OnAssemblyResolveEvent (System.Private.CoreLib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e)`

#### Expected behavior

Provide a description of the expected behavior.

#### Actual behavior

Provide a description of the actual behavior observed.

#### Known workarounds

No Workaround

#### Related information

Provide any related information

* Programming language used : C# dotnetstandard 2.0
* Links to source
* Bindings used