You might need to disable a Dynamic Local User that is in a domain environment. Use the following procedure to disable or suppress a DLU:
Create a DWORD named DLUAllowed under HKLM\Software\Novell\Workstation Manager.
Set the value of DLUAllowed to 0x0.
The Dynamic Local User policy creates and manages local accounts on their computers. Excluding a user or device from the DLU policy prevents the creation or management of local accounts on their computers.
However, you can use other existing credentials such as a domain account to log in to the computer, even when the device or user is listed in the exclusion list for that DLU policy.