In Windows 7, folders cannot be deleted. If you want to delete some folders, the results cannot be deleted. I have tried other folders, and some of them can be deleted. Many cannot be deleted. There is always the following situation: www.2cto.com cannot change the permission, and it has been similar in the past, so it has caused a lot of inconvenience. To facilitate the solution today. Solution: 1. Select the file or folder you want to delete, right-click the folder and choose Properties> switch to the "Security" tab. Click the "advanced" button in the lower right corner to switch to the "owner" tab. Click the "edit" button below. --> in the "change owner to" box, click your current user name, and change the file owner to the current user name, such as Administrators. Check the "Replace sub-container and object owner" option (folder) to confirm all the way, you have the ownership of this folder. Www.2cto.com 2. Go back to the "Security" option and select Delete from the "Group or user name" options except the "administrators". Click OK to delete the file.