Hi All I have a home network consisting of a laptop (Vista Premium+SP1) and desktop (XP Home+ SP2 with a shared printer attached). Recently, my laptop started generating log messages 2 / minute of the type: "DCOM was unable to communicate with the computer Desktop using any of the configured protocols" - with Event id 10009. Most of the research I've done suggests it might occur if there is an invalid printer, computer or other device on the network. This doesn't seem to be the case here. Other suggestions point to: a) firewall exception COM+ Network Access not Enabled. - in my case I don't even have such a rule. b) Review RPC error messages. I looked at these and they are: 311 - wsopen20 - RPC failed to bind or connect to server 312 - wsopen30 - RPC could not open socket 318 - wsopen90 - RPC called connecter but failed. Error in originating NTStatus error code 1442 - ??? (can't find info on this but the error points to the XP computer <Desktop>) 1710 - ??? (can't find info on this) c) Ensure the req'd properties for remote access are configured. These seem to be in order. I have "connection-oriented" followed by "Tunneling TCP/IP" protocols listed I can communicated between the 2 CPU ok and use the shared printer. Anyone know why this suddenly started and how to fix this error? TIA