Uninstall an app as an administrator in CCleaner Suggestions Posted June 9 · Report reply That error message is interesting in the way that it says "full administrator rights". Are you using the special "Windows Administrator" account in Win 10? That account has very special privileges and should not be used as a normal Administrator account. Most people don't even know that it is there and will never see it except during the initial Windows installation. Assuming that you do have other accounts set up: Open a command window and type in "net user administrator /active:no" - without the quote marks. Then reboot and use a normal Admin account, or a user account.