How to Delete the Windows.old folder on Windows 11

 The Windows.old folder is created when you upgrade your version of Windows, and it contains files from your previous installation.]

Open your Settings.

Select System.

Select Storage.

Select Cleanup recommendations. 

Select the Previous Windows installation(s) checkbox.

Click Clean Up button

You can also use Disk Cleanup to delete the windows.old folder on windows 11

Press Windows + S to open the search bar, then type Disk Cleanup and select it from the search results.

If prompted, choose the drive where Windows is installed (usually C:) and click OK.

In the Disk Cleanup window, click on Clean up system files.

After the system scan, you’ll see a list of file types.

Look for Previous Windows installation(s) and check the box next to it.

Click OK, then confirm the deletion by clicking Delete Files