Trying to get my WCF service running under IIS 6.
I have created the .svc
and aspnet_isapi.dll
mapping according to: http://msdn.microsoft.com/
I had the same problem. It ended up being I was running a 64-bit version of Windows 2003 Server, and had my assemblies configured for "Any CPU". Once I changed the assemblies over to x86 and uploaded to the server, everything worked.
I don't know why nobody has mentioned it anywhere else in the 30 threads I read about, but my friend recommended it to me, and it worked like a charm.
Just throwing it out there just in case someone has the same issue.