High severitydata source
Power BI Refresh Error:
AdomdConnectionException
What does this error mean?
The Analysis Services client library (ADOMD.NET) failed to connect to the Analysis Services or Azure Analysis Services instance. This error occurs with SSAS Tabular or Multidimensional models used as a Power BI source.
Common causes
- 1The SSAS instance is down or the Windows service has stopped
- 2The ADOMD.NET client library on the gateway machine is outdated or missing
- 3Kerberos authentication is failing — the service account cannot authenticate against the SSAS instance
- 4Firewall rules are blocking TCP port 2383 (default SSAS port) from the gateway machine
- 5Azure Analysis Services has been paused or the server tier has a connection limit that is exceeded
How to fix it
- 1Verify the Analysis Services Windows service is running on the SSAS server
- 2Install the latest version of the ADOMD.NET client library (part of SQL Server Feature Pack) on the gateway machine
- 3Test connectivity from the gateway to the SSAS server on port 2383 using telnet or Test-NetConnection
- 4For Kerberos issues, use the Kerberos Configuration Manager and ensure SPNs are registered: MSOLAPSvc/hostname
- 5For Azure Analysis Services, check the server status in the Azure Portal and verify it is not paused
- 6Check the Analysis Services error log (typically in %ProgramFiles%\Microsoft SQL Server\MSAS...\OLAP\Log)