login failed

Fix Error 18452: Login failed. The login is from an untrusted domain

Recently a user has reported error 18452 while connecting to database server. Full description of this error is given below:…

Fix SQL Server Error 18456: Login failed for user ‘User_Name’.

Yesterday, a developer has reported an SQL Server error 18456 Login failed for user ‘username’. (Microsoft SQL Server, Error: 18456)…

Fix SQL Server Error 4064: Cannot open user default database. Login failed.

Today, I got Microsoft SQL Server error 4064 while I was trying to connect to my SQL Server Instance using…