Domain Client

Hi,

Check for specific events about this under event log(application & system) when this happens.

Regards,
Faraz H. Khan

on the server or the client machine?

Hi,

First on the clinet which is disconnecting for unknown reason, if nothing there then check under server.

Regards,
Faraz H. Khan

This is what I have in the Local Event Viewer

System Event Viewer (constant repeating
The session setup to the Windows NT or Windows 2000 Domain Controller \\Domain.mydomain.org for the domain SCHOOL failed because the Domain Controller does not have an account for the computer A06-01.

Application Event Viewer (Constant Repeating)

Automatic certificate enrollment for local system failed to contact the active directory (0x8007052b).  Unable to update the password. The value provided as the current password is incorrect.
  Enrollment will not be performed.

Windows cannot determine the user or computer name. (Access is denied. ). Group Policy processing aborted.

Could it be because I don't have enough Cal License? which cause my server to disable computer accounts?  All the new computer I am trying to add to the domain will not work the next day.  If yes, how to I increase the # of License in Windows 2003 Standard.

I think i found something.  In the Event Viewer of the domain controller, it is recording this error regarding A06-01.  Why is our server name the computer as A06-01$ when we specifically named it A06-01?  This is happening to man of our computers.  what could be the cause of it?

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Server System Event viewer

The session setup from the computer A06-01 failed to authenticate. The name(s) of the account(s) referenced in the security database is A06-01$.  The following error occurred:
Access is denied.

Event # 5722