I have UltraVNC 1.0.2 on Win2000pro SP4 in Win2000 native domain.
Some admins can authenticate just by "user:pass", while others may only use "DOMAIN\user:pass", otherwise they fail to authenticate

I cannot figure out why.
New MS Logon enabled.
Group "DOMAIN\Domain admins" is member of DOMAIN\RemouteFullControl group, and also member of LOCAL\Administrators.
There are no LOCAL\Users with same names as those admins.
Sorry if it's RTFM... didn't find. Pls help.
wbr, Dmitry.