Is it harmful to delete Windows old?

When you upgrade your Windows operating system, it frequently creates a folder labeled “Windows.old”. This folder stores all the data from your prior version of Windows. You may be inquiring if it’s safe to erase the Windows.old folder and regain the disk space it takes up.

The answer to this query relies on some factors. In this article, we’ll look more closely at Windows.old and help you determine whether it’s secure to delete it or not.

What is Windows.old?

Windows.old is a folder produced by Windows when you upgrade your operating system. It comprises all the files and settings from your earlier version of Windows. This encompasses all your personal files, settings, and even applications.

The intention of the Windows.old folder is to guarantee that you can go back to the old version of Windows if something goes wrong with the upgrade. It is also employed to keep your files and settings unaltered if you’re reinstalling or reversing to the old version of Windows.

Is it Secure to Delete Windows.old?

In most cases, it’s safe to delete the Windows.old folder. If you’re sure that you won’t need to return to the previous version of Windows, then you can erase the Windows.old folder and reclaim the disk space it occupies.

However, you should remember that the Windows.old folder might consume several gigabytes of disk space. So, if you’re running on low disk space, it’s best to keep the Windows.old folder and free up disk space by deleting unused files and programs.

How to Delete Windows.old

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If you’ve decided that it’s secure to delete the Windows.old folder, you can do so by following these steps:

  • Open File Explorer and go to the C: drive.
  • Locate and open the Windows.old folder.
  • Select all the files and folders inside the Windows.old folder.
  • Right-click on the selection and click “Delete”.
  • Confirm that you want to delete the files by clicking “Yes”.
  • Wait for the files to be deleted.


In most cases, it’s safe to delete the Windows.old folder. Nevertheless, you should bear in mind that you won’t be able to go back to the prior version of Windows if you delete the Windows.old folder. So, if you think you might need to go back to the old version of Windows, it’s best to keep the Windows.old folder.

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