Windows 10 upgrade – Delete Windows.old folder

Have you upgraded from Windows 7 to Windows 10 or are in the Windows Insider program and are running low on disk space? If so you may have noticed the Windows.old folder weighing in at about 20gbs and you may have tried to delete it and failed – no matter how much permissions voodoo you’ve tried. If your upgrade has gone smoothly and you’ve been running without issues you can safely delete the Windows.old folder using the Windows Disk Cleanup utility.

Issue: running low on disk space, need to delete Windows.old folder.

Solution:

  1. Type Disk Cleanup in the Cortana Search field, in the list of results, click Disk Cleanup.
  2. On the Disk Cleanup tab, click Clean up system files.
  3. Select the Previous Windows installation(s) check box, and any other check boxes for the files you want to delete, and then click OK.
  4. In the message that appears, click Delete Files.
Disk Cleanup - System Files
Disk Cleanup – System Files

Disk Cleanup - Previous Windows Installation
Disk Cleanup – Previous Windows Installation
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