Connecting from SSRS 2016 to SSAS using HTTP/MSMDPump and Basic Authentication – “Object reference not set to an instance of an object”

  After upgrading to SSRS 2016 SP1 CU8, or SSRS 2016 SP2, you might see the following error when running reports or connecting to a SSAS data source using HTTP/MSMDPump with Basic Authentication, “Object reference not set to an instance of an object.”     If you look in the Report Server Error logs, you’ll…