Problems connecting to SSAS through On Premises Gateway

Hi Anonymous

Thanks for the post. Here is the repeating part of the error log:

GatewayPipelineErrorCode=DM_GWPipeline_Gateway_DataSourceAccessError
ErrorCode=-1056899072 --->
[1]Microsoft.PowerBI.DataMovement.Pipeline.Diagnostics.GatewayPipelineWrapperException: Substituted: AdomdErrorResponseException:<pi>Microsoft.AnalysisServices.AdomdClient.AdomdErrorResponseException: The following system error occurred:  A specified logon session does not exist. It may already have been terminated. 
   at Microsoft.AnalysisServices.AdomdClient.AdomdConnection.XmlaClientProvider.Connect(Boolean toIXMLA)
   at Microsoft.AnalysisServices.AdomdClient.AdomdConnection.ConnectToXMLA(Boolean createSession, Boolean isHTTP)
   at Microsoft.AnalysisServices.AdomdClient.AdomdConnection.Open()
   at Microsoft.PowerBI.DataMovement.Pipeline.GatewayDataAccess.AdomdConnectionProvider.OpenConnectionAsync()</pi>

GatewayPipelineErrorCode=DM_GWPipeline_UnknownError
InnerType=AdomdErrorResponseException
InnerMessage=<pi>The following system error occurred:  A specified logon session does not exist. It may already have been terminated. </pi>
InnerToString=<pi>Microsoft.AnalysisServices.AdomdClient.AdomdErrorResponseException: The following system error occurred:  A specified logon session does not exist. It may already have been terminated. 
   at Microsoft.AnalysisServices.AdomdClient.AdomdConnection.XmlaClientProvider.Connect(Boolean toIXMLA)
   at Microsoft.AnalysisServices.AdomdClient.AdomdConnection.ConnectToXMLA(Boolean createSession, Boolean isHTTP)
   at Microsoft.AnalysisServices.AdomdClient.AdomdConnection.Open()
   at Microsoft.PowerBI.DataMovement.Pipeline.GatewayDataAccess.AdomdConnectionProvider.OpenConnectionAsync()</pi>
InnerCallStack=   at Microsoft.AnalysisServices.AdomdClient.AdomdConnection.XmlaClientProvider.Connect(Boolean toIXMLA)
   at Microsoft.AnalysisServices.AdomdClient.AdomdConnection.ConnectToXMLA(Boolean createSession, Boolean isHTTP)
   at Microsoft.AnalysisServices.AdomdClient.AdomdConnection.Open()
   at Microsoft.PowerBI.DataMovement.Pipeline.GatewayDataAccess.AdomdConnectionProvider.OpenConnectionAsync()
  ([1]Microsoft.PowerBI.DataMovement.Pipeline.Diagnostics.GatewayPipelineWrapperException.StackTrace:)
   at Microsoft.AnalysisServices.AdomdClient.AdomdConnection.XmlaClientProvider.Connect(Boolean toIXMLA)
   at Microsoft.AnalysisServices.AdomdClient.AdomdConnection.ConnectToXMLA(Boolean createSession, Boolean isHTTP)
   at Microsoft.AnalysisServices.AdomdClient.AdomdConnection.Open()
   at Microsoft.PowerBI.DataMovement.Pipeline.GatewayDataAccess.AdomdConnectionProvider.OpenConnectionAsync()
   --- End of inner exception stack trace ---
  ([0]Microsoft.PowerBI.DataMovement.Pipeline.Diagnostics.AdomdDataAccessErrorResponseException.StackTrace:)
   at Microsoft.PowerBI.DataMovement.Pipeline.GatewayDataAccess.AdomdConnectionProvider.OpenConnectionAsync()
   at Microsoft.PowerBI.DataMovement.Pipeline.GatewayCore.ConnectionStrings.AdoNetDbFullConnectionString.<OpenConnectionAsync>d__18.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.DataMovement.Pipeline.GatewayCore.AdoNetDbConnectionPool.<>c__DisplayClass1_0.<<CreateObjectInstance>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.DataMovement.Pipeline.Common.Diagnostics.PipelineTelemetryService.<ExecuteInActivity>d__7`1.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.DataMovement.Pipeline.GatewayCore.AdoNetDbConnectionPool.<CreateObjectInstance>d__1.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.DataMovement.Pipeline.Common.Pool.BasePool`3.<CreatePoolObject>d__24.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.DataMovement.Pipeline.Common.Pool.StatelessPool`2.<Get>d__10.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.DataMovement.Pipeline.GatewayCore.GatewayProcessor.<>c__DisplayClass10_0.<<GetDatabaseConnection>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.DataMovement.Pipeline.Common.Diagnostics.PipelineTelemetryService.<ExecuteInActivity>d__7`1.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.DataMovement.Pipeline.GatewayCore.GatewayProcessor.<GetDatabaseConnection>d__10.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.DataMovement.Pipeline.GatewayCore.GatewayProcessor.<>c__DisplayClass1_0.<<EnsureConnection>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.DataMovement.Pipeline.Common.Diagnostics.PipelineTelemetryService.<ExecuteInActivity>d__7`1.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.DataMovement.Pipeline.GatewayCore.GatewayProcessor.<EnsureConnection>d__1.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.DataMovement.Pipeline.GatewayCore.GatewayProcessorDispatcher.<DispatchImpl>d__1.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.DataMovement.Pipeline.GatewayCore.GatewayProcessorDispatcher.<Dispatch>d__0.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.DataMovement.Pipeline.GatewayCore.Serialization.GatewayDeserializer.<DeserializeImpl>d__9.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.DataMovement.Pipeline.GatewayCore.Serialization.GatewayDeserializer.<>c__DisplayClass8_0.<<Deserialize>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.DataMovement.Pipeline.Common.Diagnostics.PipelineTelemetryService.<ExecuteInActivity>d__7`1.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.DataMovement.Pipeline.GatewayCore.Serialization.GatewayDeserializer.<Deserialize>d__8.MoveNext()