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SQL 2012 and WSUS - Lost SA account

Hi there,

have an interesting one with SQL 2012 Standard and WSUS.

The WSUS server was built in one domain, then removed and added to a new domain. The group "WSUS Administrators" on the old domain, was granted SysAdmin privileges.

We do not know the SA password. Nobody has Admin rights over SQL.

I have tried to run SQL in Single User Mode, with all other services stopped, but cannot get SQLCMD to connect to the instance.

It keeps telling me that someone / thing is already connected, but I can't identify what is connecting. How can you work this out?

We have other SQL instances on the same box. I have even stopped those. SQL Browser and agents also stopped.

I need to get SysAdmin rights back and set the SA password. The instance uses Windows Authentication.

I don't mind deleting the master database, as long as I can remount the WSUS database as it is now.

Any help appreciated.


Ian


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