Introduction In an earlier blog I described my motivation for upgrading an ASMX Web Service to WCF in a particular project . In that project the client was a Flash client hosted in a web page. The upgrade was simple and, as long as I ran the client from within Flex Builder , it had no problem consuming the new self-hosted WCF service instead of the ASMX. Allowing Cross-Domain Access However, once I deployed the package outside the Flex Builder, all calls to the service failed. The reason was that...