When you have just installed AX or got a backup
of the AX database from someone, you may not be able to log on to Microsoft
Dynamics AX 2012. A following error message may be displayed


The issue is that you have
not been configured as a user in the AX database.

Resolution: The solution
has following two steps

1. Extract your SID which is a unique ID for your credentials from the machine where you have installed AX by
going to into the following registry path-HKLM\Software\Microsoft\Windows
NT\CurrentVersion\ProfileList. The SID is highlighted in the left pane of the
below image.

2. Copy the SID into your AX
database in SQL Management Studio. Also change the Network Domain and
NetworkAlias as per your credentials



You should now be able to logon to Ax 2012 Client.