If you need to solve the issue of User Profile Service failed the sign-in, then you need to restart the Windows PC and sign in once more. In case if the same message appears, you need to boot Windows into Safe Mode and see if you are able to log into the account in this mode. The System Restore method will be effective in the case when this problem occurred due to the system modification. Creating a new Windows account and transferring your files to this profile can help in case if the old one is corrupted.