SQL Server Error Msg 18390 – Reason: An unknown error occurred while attempting to authenticate the user.

In this blog post, let’s learn about the error message “18390 – Reason: An unknown error occurred while attempting to authenticate the user.” in Microsoft SQL Server, the reason why it appears and the solution to fix it.

SQL Server Error Message

18390 – Reason: An unknown error occurred while attempting to authenticate the user.

Reason for the Error

To be update soon…

Solution

To be update soon…