Remote control sessions keep loosing connection

RDP, LogMeIn, VNC etc -

The most common issue is an unstable IP protocol stack. Try running "netsh int ip reset c:\ipreset.log"

The other common issue is trojan redirectors attempting to override the DNS which causes connections to drop.

If this goes away by the user connecting in Safe Mode with Networking, then you have an issue with a trojan, a firewall application, or an a/v application trying to block the system.