Qlik Sense Repository Service is continuously starting and stopping every 5-10 seconds ;
From logs the first error message is reported by "System.Diagnostics.PerformanceCounterLib.CounterExists"
Environment : All
Version : All
Performance counter not accessible or corrupted.
Checking Microsoft solutions regarding Performance counter you need to verify :
1) Service "Performance Log & Alert" is in Manual start not Disabled .
2) Service User Account belongs to local group "Performance Monitor Users" .
3) investigate and rebuild performance counter following Microsoft guide ex: https://support.microsoft.com/en-za/help/2554336/how-to-manually-rebuild-performance-counters-for-windows-server-2008-6
in particular reported :
"To rebuild all Performance counters including extensible and third-party counters, type the following commands at an Administrative command prompt. Press ENTER after each command.
Rebuilding the counters:
Resyncing the counters with Windows Management Instrumentation (WMI):
Stop and restart the Performance Logs and Alerts service.
Stop and restart the Windows Management Instrumentation service.