"Unknown error" and "Port: 0" are all dead giveaways that your problem is caused by interference from an antivirus program. Which antivirus are you...

We need the entire ORIGINAL error message, verbatim. Can't help much without it. t-4-2 "Jack C." wrote in...

Your AVG antivirus was probably installed with its default install option. If so, uninstall it, then reinstall, but select 'custom' install, which...

I have been trying to install a Family Tree Maker 2010. I have use all the older versions without a problem. Now I have Vista 64 and everything seems...

Obviously, the other desktop is/was not configured exactly correctly. Generally, you compare it's network settings against the working P/C. (TCPIP,...