To run it, search for Disk Cleanup in the Start menu, select the drive with update files (this is usually the C drive), and ...

If you can't delete an ISO file as the file is open in your System, check if it is mounted as a drive or not. Uses these proven fixes to resolve the issue.

Windows 11/10 creates thumbs.db files within folders on Network drives & centralized thumbnail cache. Learn how to disable and remove them.

One reliable open-source tool for securely overwriting and thereby deleting files on a Windows system is the aptly named Eraser. The program can be downloaded for free from various sites.