If you select Windows authentication mode during SQL Server installation then ‘sa’ login is not enabled and you have to enable it manually if you want to use it. Due to security reasons it is recommended not to enable ‘sa’ login unless you need this login seriously. Also set strong password with combination of alpha numeric and special characters. You can use ALTER LOGIN statement to enable ‘sa’ login with T-SQL or you can reset by using SQL Server ManagementStudio.
Enable ‘sa’ Login with SSMS
You can enable ‘sa’ login by following below path in SSMS.
Go to Object Explorer –> expand Security option–> expand Logins –> right click on ‘sa’ and selectProperties. You will get below login properties window.
Now, here in password field you can set the new password for ‘sa’ login. Now go to Status page and select Enabled option for login ‘sa’ and click OK as shown below.
Enable ‘sa’ Login with T-SQL
You can also set the ‘sa’ login password and enable the same with following T-SQL command.
ALTER LOGIN sa ENABLE GO ALTER LOGIN sa WITH PASSWORD = 'B@6P@$$w0r6' GO
