Login Error: %2 %1 not initialized

Some users cannot be logged in Microsoft Dynamics AX 2009, and get the following error:

%2 %1 not initialized.

Some workarround lead me to some clues about problem on security key (that has no parent key).

I want a solution (Microsoft best practice, or any Microsoft authentic solution) to this problem.

What should I do exactly?

Thanks :slight_smile:

Have you got any luck with this or how did you solve this issue. Pls reply.