In article , Mike Swift
writes
Otherwise, you shut down running applications one-by-one from the task
manager and check powercfg after each application you shut down, and
eventually, hopefully, you should find the offending application.

Good luck.

Thanks, I'll give that a try.

Cheers, from past experience I'll need it :-)

Mike

Update.

I found the culprit Audiosrv PID 16376 Windows Audio
LocalServiceNetworkRestricted

stopping this gave a clear powercfg -requests

As I understand it permanently stopping this wil disable all sound
functions so I' no nearer solving the not sleeping problem.

Mike

--
Michael Swift We do not regard Englishmen as foreigners.
Kirkheaton We look on them only as rather mad Norwegians.
Yorkshire Halvard Lange