UltraVNC

I think there is a problem with authentication in this version 1.4.3.6.
I configured it to authenticate with MS Logon, on a 2012 r2 Domain Controller server, I used UVNC Group 1, it does not accept authentication.
With the right mouse button on the icon and going to settings, no matter how many ...

So it is that I provide computer support service, and changing the version 1.02 used in PCs with XP, I would have to do this on many machines for many customers. If there is another solution would be much more practical for me.

grateful

Hello
I use UltraVNC 1.02 with MSRC4Plugin and rc4.key on windows xp.
In the machines with Windows 7, use UltraVNC 1.9.6.1, but I can not do the work MSRC4Plugin between versions 1.02 (server or viewer) to 1.9.6.1 (server and viewer), so for now, I have to use 1.9.6.1 without MSRC4Plugin.

Is ...