A connection was successfully established with the server, but then an error occurred during the login process. (Error Number: 233)
For SQL2008,
- open Management Studio
- Rt click on instance
- go to properties
- select Security
- Under Server Authentication, check SQL Server and Windows Authentication Mode
- hit OK
Restart the server using configuration manager.
Turn out to be some SQL service was stopped somehow on server. Restarting SQL Server service manually was the solution.
I know this is foolish but worked anyway. Thanks @PareshJ for the useful comment.
the following points work for me. Try:
- start SSMS as administrator
- make sure SQL services are running. Change startup type to 'Automatic'
- In SSMS, in service instance property table, enable below:
