You upgrade an earlier version of SQL Server Reporting Services (SSRS) to SSRS 2016. When you open the SSRS web portal, you receive the following error message:
HTTP 503: Service Unavailable
The fix for this issue is included in the following cumulative update 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:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Learn about the terminology that Microsoft uses to describe software updates.