If you have several user accounts on the PC, switch to the administrator account as follows: In this part, we’ll show you three ways to delete old Windows files.īut first, we need to switch your account to the administrator. Windows.old folder requires administrator permission from the system to make changes to this folder. ◤ You don’t have administrator permission Windows 7 and older OS, those files will be removed automatically in 30 days after the OS update Windows 8.1/8, after 28 days Windows 10, after 10 days. ◤ The related files are deleted by the systemĭifferent systems have a different time to delete old Windows files. This situation might be caused by the following reasons: However, some users are not allowed to remove it, and many of them see the report showing the file not found or the target is not a valid file or directory. Since all related files are in one folder, you can easily delete the whole folder to remove all related files. But if you need available space in a rush, or you’re sure you won’t go back to the previous version, you can manually delete those old Windows files manually. Normally, your Windows will clean up this folder after 10 days. ▶ Is it safe to delete old Windows files? You may also search the Windows.old folder for a specific file that was not correctly migrated to your fresh Windows installation. If you don't like the new version, you can use it to restore Windows to a prior version. The Windows.old folder may need almost 20GB which holds all of your prior Windows installation's files and data, such as Windows system files, user account settings, User Profile, User Folder files, and so on. All relevant files are stored in a folder called “Windows.old”. If you check your C drive immediately after a system update, this is probably caused by the old Windows files of the previous version. Some users find their computers become quite slow and the free space on the C drive is suddenly smaller after an update.
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