Help folks...

We have an established 3-tier DCOM application which we have recently started running over the internet using Tunneling TCP/IP and COM Internet Services (otherwise refered to as RPC over HTTP).

For some reason, the method invocations periodically fail with the message "The RPC call failed". There seems to be nothing we can do to control this, and cannot work out how to get around it without a significant amount of recoding.

Has anybody else experienced this? Does anyone have any suggestions?

If I read an MSDN article that says 'This is by design' Ill go postal.

Thanks.

Dunc