Hello Christof;

Yes there was one difference. The DCOMCNFG interface in Win2003 is different from Win2000 and prior. Win2003 gives a tree view. There is a master DCOM swith under the properties of "Component Services\Computers\My Computer". Once I turned this switch on, DCOM worked. Thanks for your help!


>Hi George,
>
>> They are all configured the same.
>
>They can't be. If they are configured the same they would behave the same. Something is different among these.
>
>Have you checked if regular domain users do have networking login permissions?
>Have you turned on auditing in the Local Security Policies?
>Can you impersonate the user on one of these machines and access the COM server locally?
>Have you checked the event log on the client and the server?
>Have the user permissions to all files required? Use PROCMON from Sys (http://msdn.microsoft.com/en-us/library/ms809327.aspx)
>Here's a guide how to configure DCOM properly: http://www.codeproject.com/KB/COM/dcomcnfg.aspx