Enabling a Windows Media Center Extender if Windows Live OneCare is installed on the system
I posted some troubleshooting links last night for Xbox 360 PC setup issues that I have heard about from customers in the past. Heath Stewart posted a comment describing some issues he has seen on his home system, which has Windows Live OneCare installed. In his comment, he mentioned that some documentation exists for these issues on the OneCare help and support center.
There are cases where OneCare will interfere with Windows Media Center Extender and Windows Media Connect functionality if you install/configure an Extender or WMC and then install OneCare afterwards. I searched the OneCare help site and found a couple of documents and decided to post links to them here to make it easier for people who run into this kind of issue and try to perform web searches in the future: