Really hope someone can help with this. Since last Wednesday my domain has started to lock out all my user accounts at random intervals. It happened after i rebooted one of my DCs and 12294 SAM errors started appearing in my system log. It appears to happen at random though it seems to happen more during work hours. It lasted for 24 hours on Saturady/Sunday before locking all the accounts again on Monday.
Can’t think what is causing the lockouts, I have ruled out a virus as Microsoft mention in the knowledge base articles and nothing has changed on the domain apart from the reboot. Any help would be very much appreciated.