FIX: Unexpected exception occurs when you process dimensions by using Process Update in SSAS 2016 or SSAS 2017

Applies to: SQL Server 2016 DeveloperSQL Server 2016 EnterpriseSQL Server 2016 Enterprise Core

Symptoms


Assume that you install Microsoft SQL Server 2016 Analysis Services (SSAS 2016) or SSAS 2017 in multidimensional mode. When you process the dimensions by using the Process Update option, you may receive an error message that resembles the following:

Internal error: An unexpected exception occurred.

Resolution


This issue is fixed in the following cumulative updates for SQL Server:

       Cumulative Update 5 for SQL Server 2017

       Cumulative update 8 for SQL Server 2016 SP1

Workaround


You may work around this issue by performing a Process Full operation before the Process Update operation. Because this issue only occurs when you perform the Process Update operation after the SSAS service is restarted. 

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.