My QODBC version 6 (web edition/DCOM) on Windows 2000 is working fine for QuickBooks 2006. Now I am trying to setup my client's Windows Server2003 (Web Edition) with QODBC version 6, QuickBooks 2005, I am getting the following error:

[QODBC] QB Open Connection Failed. DCOM Instance Error= 8000401a, Unknown error. Created qbXMLRP2 OK.

I used the automatic DCOM configuration tool (from the QODBC site) to set the permissions. Identity on qbXMLRP2eQODBCInteractive and qbXMLRPeQODBCInteractive is "The interactive user". When I change this identity to "The Launching user", I get 8004041c error. I would like to keep the identity as "The interactive user".

Is there any file/dll that DCOM configuration tool might have missed to set the proper permission on? Any help will be greatly appreciated.

Thanks

See: How do I manually setup the QODBC DCOM Servers on Windows XP Pro and Windows 2003 Server? 

When using Windows 2003 Server you also need to check your "Enhanced Security Configuration for Internet Explorer" settings.

The Enhanced Security Configuration for Internet Explorer typically sets the IE security settings to "high", so QuickBooks throws a warning every time it starts, even for the SYSTEM service, which hangs QODBC while waiting for input.