Cannot access after upgrate to the latest service pack

Cannot access after upgrate to the latest service pack

Does anyone have had problems with log in after upgrade to the latest service pack. I applied the service pack witn out problem, but after that i recieve a message that the admin password is incorrect.

I have a backup of the database. May I replace the database with the old one or there are changes over the structure and objects in the service pack?

                New to ADSelfService Plus?