KB3209520 - FIX: SSAS stored connection strings become corrupted if extended properties are used incorrectly

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SQL Server 2016 Developer - duplicate (do not use) SQL Server 2016 Enterprise - duplicate (do not use) SQL Server 2016 Enterprise Core - duplicate (do not use) SQL Server 2016 Standard - duplicate (do not use) SQL Server 2016 Service Pack 1 More...Less

Symptoms

If you use extended properties incorrectly in a connection string in SQL Server 2016 Analysis Services, the stored connection strings become corrupted.

Resolution

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

Each new build for SQL Server 2016 contains all the hotfixes and all the security fixes that were included with the previous build. We recommend that you install 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 terminologythat Microsoft uses to describe software updates.