BI Service Error: SSASFrameworkService not generated, Instance of ‘SysSecRole’ could not be created

I recently faced another problem with SSRS reports. The BI Service (Administration > Setup > AIF > Incoming Ports) was down and could not be activated. Trying to re-activate the service resulted in an error telling me that the SSASFrameworkService could not be generated because an instance of service class “SysSecRole” could not be generated. AOS restart and Full IL Compilation didn’t solve the problem.

However, the solution was to re-deploy the AIF Service Group: AOT > Service Groups > BI Service > Context Menu > Deploy Service Group. Afterwards the BI Service could be activated and reports were working again.