What Should I Do If I Cannot Connect to My RDS for SQL Server Instance?
Error message: Login failed for user 'rdsuser'. ClientConnectionId:xxx.
Error cause: The username or password of the RDS instance is incorrect.
Solution: Ensure that the username and password are correct. If you are not sure, view the username and reset the password on the RDS console.
Notice
Changing the password may affect services.
Parent topic: Connection Management