Mousocoreworker.exe preventing sleep sounds like you're encountering an issue where a process named "mousocoreworker.exe" is preventing your system from entering sleep mode. "mousocoreworker.exe" is associated with Microsoft OneDrive, specifically related to syncing files and folders.Update OneDrive: Make sure you have the latest version of Microsoft OneDrive installed on your system. Sometimes, outdated software can cause compatibility issues leading to such problems.If none of these steps resolve the issue, you may need to further investigate the specific behavior of "mousocoreworker.exe" or consider reaching out to Microsoft support for assistance.