SQL SERVER – Fix : Error: 18452 Login failed for user ‘(null)’. The user is not associated with a trusted SQL Server connection. | Journey to SQL Authority with Pinal Dave

Some errors never got old. I have seen many new DBA or Developers struggling with this errors. Error: 18452 Login failed for user '(null)'. The user is not associated with a trusted SQL Server connection. Fix/Solution/Workaround: Change the Authentication Mode of the SQL server from "Windows Authentication Mode (Windows Authentication)" to "Mixed Mode (Windows Authentication… Continue Reading...

Source: SQL SERVER – Fix : Error: 18452 Login failed for user ‘(null)’. The user is not associated with a trusted SQL Server connection. | Journey to SQL Authority with Pinal Dave