I have had version 4 running on a network of server and 14 workstation for some time now. All has been fine updating using the http method. I am in the process of installing a new server which will replace the old one but not until all applications have been crossed over. As a start I installed ESS on the new server and setup the mirror using our current licence file. The mirror created OK and I have shared the mirror folder but when I try to update from a workstation it fails to connect. The update will still work when I revert back to the old server. I can't work this out. I tried a different port number with no joy. I'm wondering perhaps if the licence file will only work on one server? Has anyone got any ideas?