Symptoms
Assume that you use Microsoft SQL Server 2016 Analysis Services (SSAS 2016) in Tabular mode in which the Multidimensional Expressions (MDX) or Data Analysis Expressions (DAX) query that you execute contains a query scoped measure that references a global measure. When you execute another MDX or DAX query that references to the same global measure subsequently, the query may fail and you will receive the following error message:
An unexpected exception occurred
Resolution
This issue is fixed in the following cumulative updates for SQL Server:
Cumulative Update 2 for SQL Server 2016 SP1 Cumulative Update 4 for SQL Server 2016
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:Latest cumulative update for SQL Server 2016
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
Learn about the terminology that Microsoft uses to describe software updates.