Change authentication mode with SSMS
- In SQL Server Management Studio Object Explorer, right-click the server, and then click Properties.
- On the Security page, under Server authentication, select the new server authentication mode, and then click OK.
- In the SQL Server Management Studio dialog box, click OK to acknowledge the requirement to restart SQL Server.
- In Object Explorer, right-click your server, and then click Restart. If SQL Server Agent is running, it must also be restarted.
Login failed for user ‘xxxxxx’. Reason: An attempt to login using SQL authentication failed. Server is configured for Integrated authentication only.