User changes automatically in Enterprise portal and Ax client

hi all,

I am using dynamics ax 2009 client and enterprise portal along with this.

suppose the windows user is Nick.

But when i open the ax client or Enterprise portal site it displays other user name (test123) user.

I checked all the relations with the users in active directory and users in administration.

Please help me to know how a user changes automatically in Client and EP and suggest a solution for it.

Where in the AX client do you see the other user name? Can’t it be employee name instead? These are two different things, employees are merely linked to users.