We have an SQL Server 2012 SP1 which was running perfectly until we applied the SQL Server 2012 SP2.
After SP2 was installed and the server rebooted all the associated SQL services that uses NTService\xxxxxxx accounts failed to start with Error 5: Access Denied.
We were able to change the services to Local System account but I just want to understand why this occurred and is this ok?
Has anyone had a similar issue or can anyone assist with an explanation?