When you deploy a Windows 10 feature update or upgrade to a new version of the system, Microsoft creates a“ Windows.old ”To save a copy of the previous version. If the update installation fails or windows cannot be enabled with a blue screen error, users can use this folder to rollback and restore to the previous version.

   Windows.old Folders can take up to 20GB of disk space, but the actual usage depends on the number of applications, files, and other content that users have previously installed. < / P > < p > to delete Windows.old You need to click the “clean system files” button, and then select the “previous windows installation” option. The tool will automatically calculate the space occupied by these files. You can click & quot; OK & quot; to erase previous windows system files and free up storage space. The technology giant says the process is simple, but it may not work for everyone. < / P > < p > in some cases, the Disk Cleanup tool cannot delete & quot; Windows.old &The user has been reporting the problem for months. The bug was first seen and fixed in 2016, but it reappeared to some users after a recent update. In a preview update released this week, Microsoft said it had finally fixed the problem. In the support documentation, it said, “we fixed the problem of, windows.old The folder could not be completely deleted. It is worth noting that this fix is currently only open to testers in the windows insider program. < / P > < p > although Microsoft has not announced when the update will be released in the official version, it is expected that Microsoft will release the fix by the end of this year. If the folder cannot be deleted using disk cleanup, you can go to the & quot; settings & quot; app and navigate to & quot; storage settings;. In the storage settings, select temporary files to delete unnecessary files that occupy system disk space. SpaceX beat blue origin and Northrop Grumman to win a $316 million air force contract