NComputing will fail to allow multiple users to connect to a Windows XP or Windows 7 host if the following Windows updates are installed. To allow NComputing clients to have multiple connections again, simply remove these updates. You may want to just disable Windows updates, because they’ll just get reinstalled if you run updates again after removing them. Reinstalling NComputing vSpace might be required.
- Microsoft update KB 2984972: http://support2.microsoft.com/kb/2984972
- Microsoft update KB 3003743: http://support2.microsoft.com/kb/3003743