Did XP SP2 break DCOM? [Yes - Resolved]

[Dave Sell]

I just got a brand-new system the came with XP SP2. My server is XP SP1 and my other client is also XP SP1.

The client with SP1 can use DCOM correctly, all my components are working fine between it and the server with SP1.

However, this new system, with DCOM settings exactly the same, refuses to load the client DCOM consuming app, giving me Error #70, Permission Denied.

I've been over this many times and I'm sure the settings on the SP2 client are the same as the settings on the SP1 client.

The server settings are EVERYONE, INTERACTIVE, and GUEST, so that should include the SP2 client in the trust domain.

The only thing left to suspect is SP2. Is that possible? I have completely killed off SP2's "manditory" firewall. There is no other firewall or AV running. All security updates are installed.

Any ideas? Do I have to re-install XP without SP2?

Thanks!

Dave