Error 401 connecting external Power BI dataset

Hi,

I am working with a client at the moment to do a proof of concept before purchasing Power BI preminum. Both me and the external client are using pro trial licenses.

The aim here is to be able to share a dataset with this client cross tenent. The client is in our AAD and I can share and grant him permissions to data sets through power bi service. Through here he is able to create reports, edit the model and do all the stuff he needs to.

The problem arises when the user tries to connect to these data sets through power bi desktop. The user can see the external data sets through the data hub, but when he tries to connect he receives "remote server returned an error (401) Unauthorised.

In my tenent setting I have enabled 

- Allow XMLA Endpoints and Analyze in Excel with on-premises datasets.

- Users can work with Power BI datasets in Excel using a live connection.

- Allow DirectQuery connection to Power BI datasets

- XMLA endpoint is set to "Read/Write".

-Users can work with Power BI datasets in Excel using a live connection

And below is the error message

---------------------------------------------------------------------------------

Feedback Type:
Frown (Error)

Error Message:
The remote server returned an error: (401) Unauthorized.

Stack Trace:
System.Net.WebException
at System.Windows.Forms.Control.MarshaledInvoke(Control caller, Delegate method, Object[] args, Boolean synchronous)
at System.Windows.Forms.Control.Invoke(Delegate method, Object[] args)
at System.Windows.Forms.WindowsFormsSynchronizationContext.Send(SendOrPostCallback d, Object state)
at Microsoft.PowerBI.Client.Windows.Services.UIBlockingService.AllowModalDialogs(Action action)
at Microsoft.PowerBI.Client.Windows.LiveConnectHelpers.LiveConnectionPropertiesValidator.TryGetValidLiveConnectionProperties(IPowerBIWindowService windowService, ILiveConnectionProperties connectionProperties, Report report, ILiveConnectionCompleter liveConnectionPropertiesCompleter, ILiveConnectionProperties& validLiveConnectionProperties, Boolean& resultIsSameConnection, ValidationStatus& validationStatus)
at Microsoft.PowerBI.Client.Windows.PowerBIDataImporter.AreAnalysisServicesConnectionPropertiesValid(IPowerBIWindowService windowService, Report report, ILiveConnectionProperties connectionProperties, AnalysisServicesConnectionMode connectionMode, ILiveConnectionCompleter completer, ILiveConnectionProperties& validConnectionProperties)
at Microsoft.PowerBI.Client.Windows.PowerBIDataImporter.ValidateAndCreateAnalysisServicesConnection(ILiveConnectionProperties connectionProperties, Boolean addToFormulaHistory, Boolean isExternalDataset)
at Microsoft.PowerBI.Client.Windows.PowerBIDataImporter.<>c__DisplayClass24_0.<<AddPowerBIDatahubSource>b__0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at Microsoft.PowerBI.Client.Windows.IExceptionHandlerExtensions.<HandleAwaitableAsyncExceptions>d__1.MoveNext()

Stack Trace Message:
The remote server returned an error: (401) Unauthorized.

Invocation Stack Trace:
at Microsoft.Mashup.Host.Document.ExceptionExtensions.GetCurrentInvocationStackTrace()
at Microsoft.Mashup.Client.UI.Shared.StackTraceInfo..ctor(String exceptionStackTrace, String invocationStackTrace, String exceptionMessage)
at Microsoft.PowerBI.Client.Windows.Telemetry.PowerBIUserFeedbackServices.GetStackTraceInfo(Exception e)
at Microsoft.PowerBI.Client.Windows.Telemetry.PowerBIUserFeedbackServices.ReportException(IWindowHandle activeWindow, IUIHost uiHost, FeedbackPackageInfo feedbackPackageInfo, Exception e, Boolean useGDICapture)
at Microsoft.Mashup.Client.UI.Shared.UnexpectedExceptionHandler.<>c__DisplayClass14_0.<HandleException>b__0()
at Microsoft.Mashup.Client.UI.Shared.UnexpectedExceptionHandler.HandleException(Exception e)
at Microsoft.PowerBI.Client.PowerBIUnexpectedExceptionHandler.HandleException(Exception e)
at Microsoft.PowerBI.Client.Windows.Utilities.PowerBIFormUnexpectedExceptionHandler.HandleException(Exception e)
at Microsoft.PowerBI.Client.Windows.IExceptionHandlerExtensions.<HandleAwaitableAsyncExceptions>d__1.MoveNext()
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.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run()
at System.Threading.Tasks.AwaitTaskContinuation.RunCallback(ContextCallback callback, Object state, Task& currentTask)
at System.Threading.Tasks.Task.FinishContinuations()
at System.Threading.Tasks.Task.Finish(Boolean bUserDelegateExecuted)
at System.Threading.Tasks.Task`1.TrySetException(Object exceptionObject)
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetException(Exception exception)
at Microsoft.PowerBI.Client.Windows.PowerBIDataImporter.<>c__DisplayClass24_0.<<AddPowerBIDatahubSource>b__0>d.MoveNext()
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.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run()
at System.Threading.Tasks.AwaitTaskContinuation.RunCallback(ContextCallback callback, Object state, Task& currentTask)
at System.Threading.Tasks.Task.FinishContinuations()
at System.Threading.Tasks.Task`1.TrySetResult(TResult result)
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetResult(TResult result)
at Microsoft.PowerBI.Client.Windows.LiveConnectHelpers.PowerBIService.PowerBIServiceConnector.<SelectDatahubArtifactFromPowerBIService>d__14.MoveNext()
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.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run()
at System.Threading.Tasks.AwaitTaskContinuation.RunCallback(ContextCallback callback, Object state, Task& currentTask)
at System.Threading.Tasks.Task.FinishContinuations()
at System.Threading.Tasks.Task`1.TrySetResult(TResult result)
at System.Runtime.CompilerServices.AsyncTaskMethodBuilder`1.SetResult(TResult result)
at Microsoft.PowerBI.Client.Windows.PowerBIService.Flows.AuthenticatedWebRequestor.<Execute>d__5`1.MoveNext()
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.Runtime.CompilerServices.AsyncMethodBuilderCore.MoveNextRunner.Run()
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
at System.Delegate.DynamicInvokeImpl(Object[] args)
at System.Windows.Forms.Control.InvokeMarshaledCallbackDo(ThreadMethodEntry tme)
at System.Windows.Forms.Control.InvokeMarshaledCallbackHelper(Object obj)
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.Windows.Forms.Control.InvokeMarshaledCallback(ThreadMethodEntry tme)
at System.Windows.Forms.Control.InvokeMarshaledCallbacks()
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Form.ShowDialog(IWin32Window owner)
at Microsoft.Mashup.Client.UI.Shared.WindowManager.ShowModal[T](T dialog, Func`1 showModalFunction)
at Microsoft.PowerBI.Client.Program.<>c__DisplayClass6_0.<RunApplication>b__0()
at Microsoft.PowerBI.Client.Windows.IExceptionHandlerExtensions.<>c__DisplayClass3_0.<HandleExceptionsWithNestedTasks>b__0()
at Microsoft.Mashup.Host.Document.ExceptionHandlerExtensions.HandleExceptions(IExceptionHandler exceptionHandler, Action action)
at Microsoft.PowerBI.Client.Program.RunApplication(String[] args)
at Microsoft.PowerBI.Client.Program.Main(String[] args)

PowerBINonFatalError:
{"AppName":"PBIDesktop","AppVersion":"2.116.966.0","ModuleName":"Microsoft.PowerBI.Client.Windows.dll","Component":"Microsoft.PowerBI.Client.Windows.Services.UIBlockingService","Error":"System.Net.WebException","MethodDef":"AllowModalDialogs","ErrorOffset":"43"}

Snapshot Trace Logs:
C:\Users\lewright\AppData\Local\Microsoft\Power BI Desktop\FrownSnapShot8605799a-76ae-488e-a13b-7db0d3dacde2.zip

Model Default Mode:
Empty

Model Version:
PowerBI_V1

Performance Trace Logs:
C:\Users\lewright\AppData\Local\Microsoft\Power BI Desktop\PerformanceTraces.zip

Enabled Preview Features:
PBI_b2bExternalDatasetSharing
PBI_enableWebView2
PQ_WebView2Connector
PBI_sparklines
PBI_scorecardVisual
PBI_NlToDax
PBI_fieldParametersSuperSwitch
PBI_horizontalFusion
PBI_optimizeTabRibbon
PBI_relationshipEditPane
PBI_setLabelOnExportPdf

Disabled Preview Features:
PBI_shapeMapVisualEnabled
PBI_SpanishLinguisticsEnabled
PBI_qnaLiveConnect
PBI_azureMapVisual
PBI_enhancedTooltips
PBI_angularRls
PBI_onObject
PBI_dynamicFormatString

Disabled DirectQuery Options:
TreatHanaAsRelationalSource

Cloud:
GlobalCloud

PowerBIUserFeedbackServices_IsReported:
True

Formulas:

section Section1;

Many thanks