Unable to remove a domain from the Plesk Control Panel

Error :

Unable to remove domains: Problems occurred while removing domains: Delete database user failed: Login failed for SQL Server login ’sa’. The password for this login has expired.

Fix :

1. Log in to the server
2. Go to Start >> Programs > Microsoft SQL Server > SQL Management Studio Express > Login using Windows authentication.
3. Go To Databases > Logins > Sa ( right Click ) > Properties
4. Here ,uncheck the Enforce Password Expiry option >> Save the changes

This should fix the issue!