Symptoms
Assume that you connect to Microsoft SQL Server 2014 Analysis Service (SSAS 2014) with Power BI Desktop. When you run a DISCOVER_CSDL_METADATA command against the cube and retrieve metadata for a table or dimension, you may receive the following error message in SSAS profiler:
<Error ErrorCode="3238002710" Description="Internal error: An unexpected exception occurred." Source="Microsoft SQL Server 2014 Analysis Services" HelpFile="" />
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Resolution
The issue is fixed in the following cumulative update for SQL Server:
About cumulative updates for SQL Server:
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:
References
Learn about the terminology that Microsoft uses to describe software updates.