Home > Commands, Microsoft, SQL > How to recover sysadmin access to SQL Server 2012 when sa password is lost

How to recover sysadmin access to SQL Server 2012 when sa password is lost

  1. Open the SQL Server Configuration Manager tool
  2. Navigate to SQL Server Services and Stop the SQL Server Instance that needs a sa password reset
  3. Right click the on the instance/service and select properties.
  4. Go to the “Startup Parameters” tab, and in the Specify a Startup Parameter text box write  “-mSQLCMD”, click Add and then click OK.
  5. Restart the SQL Server Instance  which will now be running in single-user mode

When the SQL Server Instance starts in single-user mode,  you can use the Windows Administrator account to connect to SQL Server using the sqlcmd utility and Windows authentication.

Connect to SQL Server using sqlcmd: sqlcmd –S.\SQLExpress

The following example adds the account “John” in the “EXAMPLE” domain to the SQL Server “sysadmin” role:

EXEC sp_addsrvrolemember ‘EXAMPLE\John, ‘sysadmin’;
GO

Note!
Once the sysadmin access has been recovered, remove the “;-mSQLCMD” from the startup parameters using the Configuration Manager and restart the SQL Server Instance

-Eric

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Categories: Commands, Microsoft, SQL Tags: ,
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