If you have upgraded to Windows 10 you may find that you have a Windows.old folder in the root of your C: drive. If you want to remove this folder to free up some space, then you can use the Clean Manager tool built into Windows 10.
To do this, right click on the Start button in the bottom left corner and click Run. Then in the run box, type in the following and press Enter:
From here, the tool will search for anything that it can clean up and bring up the following box:
You then need to click on the “Clean up system files” and let the tool re-run. Once it has completed, you can check the “Previous Windows installation(s)” option and click the OK button. This will then go through and remove this folder successfully.
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