If you are in a peer to peer network you must set None in authentication level (client and server) and identity in your server impersonation level and impersonate in your client impersonation level. In your server you must flag surrogate with OLEVIEW Program if you make a .dll and not an .exe file. In your application's proprietes on your server (dcomcnfg) you must check interactive user like identity and list in access and launch permission the users: system, everyone, interactive

Hi

Marco Livrieri