PC will not sleep - related to last Win10 update?

My PC will not sleep.

PowerCFG suggests it's MoUsoCoreWorker.exe which I believe is about updating Windows.

MoUsoCoreWorker.exe is a fundamental system file so deleting it is not really an option.

All my other settings relating to sleeping seem correct.

Any suggestions as to how to prevent MoUsoCoreWorker.exe from permanently waking up the PC?

Everything was fine up to the July update.

Many thanks, John.
WinVer = Ver 2004 Build 19041.388

Yesterday's updates applied, now using Win10 Ver 2004 Build 19041.450.

Thanks to pointing me to the MS Tech Support. I've seen similar on other sites, but will check it out.

Thanks for responding, much appreciated.

[edit] powercfg -requests now no longer lists MoUsoCoreWorker.exe #FingersCrossed [/edit]

All seems well now. Many thanks, Ken.

PS I loved my visit years ago to Ontario. One day I may get there again,