Restart Windows Update Service
- Open Command Prompt in Administrator mode and execute this command:
powercfg /requests- If you see MoUsoCoreWorker.exe listed anywhere, then it’s because of the Windows Update
- Open Service Manager, locate Windows Update service, and restart it.
- Rerun the Power Config command, and check if the listing of MoUsoCoreWorker.exe is gone.
this information from :
Someone needs to tell them its only a temporary fix. The process eventually comes back and prevents the computer from sleeping.