Cannot change File or Folder Permission in Windows
But if for some reason, you cannot set custom permissions, for files or folders, here are some things you can try, depending on your symptoms. If this does not help you, you can use DropPermission to instantly overcome this problem. For further troubleshooting, you may want to see this post on how to troubleshoot File and Folder Permission Issues. See this post if you receive You’ll need to provide administrator permission to delete this folder error message.
