<ul data-eligibleForWebStory="false">Disk Cleanup utility on Windows 11 helps in freeing up storage space and improving system performance.You can run Disk Cleanup from Windows Search, Windows RUN, Control Panel, or configure it via Storage Sense.Select the drive, choose files to delete, and confirm the cleanup to free up space.PC optimization software can also be used to clean junk files and improve system performance on Windows 11.