I am administering a database server running SQL Server 2016. The MSSQLSERVER service has been running under a domain account (with a password that does not expire) for a long time now with no problems. Recently, the MSSQLSERVER service stopped and when I tried to restart it I got the following error:
Error 1069: The service did not start due to a logon failure
I tried re-entering the credentials for the domain account and restarted the service but that did not work. I even tried testing the SQL domain account to see if it can still log on by logging into a computer and it logged in without any logon failure. So the password is correct for the SQL domain account. What could be the reason that the MSSQLSERVER is not accepting the domain account credentials?