connection - Microsoft SQL Server, Error: 18456 by login with "sa" through SQL Server Authentication - Stack Overflow
SQL SERVER - FIX ERROR - Cannot connect to . Login failed. The login is from an untrusted domain and cannot be used with Windows authentication. (Microsoft SQL Server, Error: 18452) -
Microsoft sql server error 18456 login failed for user - Stack Overflow
Fix SQL Server Error 18456: Login failed for user 'User_Name'.
Why Cannot Login into SQL Server with Windows Authentication Mode
Login failed in SQL Server Express - Stack Overflow
sql server authentication login failed - Database Administrators Stack Exchange