Hi all Installed v10 3CX on 2008 Server (x64), using IIS, all working (management site), however if i try to use myphone (website), says theres a communication error. I have iPhone clients working, Windows clients version, however i cant get this "myphone" website to work, i get the login box, however the ID and password is correct but it says theres a comms error. Tried this with server and client PC firewalls off, same problem, however with firewalls on the client 3CX and server 3CX all work as designed (its not a firewall issue). It had to install.NET4 on the server, so how do i debug this issue? Server is 64bit. I have the same issue using IE as Firefox, however as it uses silverlight i assume its IE only!