FIX: Intermittent failure with System.NullReferenceException when you use custom authentication in SSRS 2014 or 2016

Applies to: SQL Server 2014 Service Pack 2SQL Server 2014 DeveloperSQL Server 2014 Enterprise


When you use custom authentication in Microsoft SQL Server 2014 or 2016 Reporting Services (SSRS), you experience a System.NullReferenceException error when you render reports, and you receive an error message that resembles the following in the Reporting Services log:

library!ReportServer_0-1!277c!Date-Time:: e ERROR: Throwing Microsoft.ReportingServices.Diagnostics.Utilities.InternalCatalogException: , Microsoft.ReportingServices.Diagnostics.Utilities.InternalCatalogException: An internal error occurred on the report server. See the error log for more details. ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.ReportingServices.Diagnostics.Globals.get_IsAnonymous()
   at Microsoft.ReportingServices.WebServer.Global.EnableAntiDos()
   at Microsoft.ReportingServices.WebServer.Global.Application_EndRequest(Object sender, EventArgs e)
   --- End of inner exception stack trace ---;


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

Cumulative Update 7 for SQL Server 2016 RTM

Cumulative Update 2 for SQL Server 2016 SP1

Cumulative Update 5 for SQL Server 2014 SP2 


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.