I use UltraVNC (version : Win32 1.0.2 MS Logon II) on 90 Workstations (W2k, XP and W2k3 R2)) without problem.
With a unique Win NT 4.0, I can connect once from a client (ie: from home), but when I close the connection and try to connect with another client (ie: from Office), I receive the message "Failed to connect to server" (french traduction

I must call to the customer to reboot the server if I want to connect from my office !
Why ? Does NT4.0 don't close corectly my last VNC session ? Can I found local log to track this issue ?
Thanks
Nicolas