Login failed for user XYZ The user is not associated with a trusted SQL Server connection.

Problem:Login failed for user XYZ The user is not associated with a trusted SQL Server connection.

Resolution: Login is failed due the the authentication mode is Windows Authentication and it is not allowing SQL Server authentication for SQL Login.

Change the Authentication Mode of the SQL server from Windows Authentication Mode (Windows Authentication) to Mixed Mode (Windows Authentication and SQL Server Authentication)

Right Click on Server and Select the Server Properties from pop up.