Looking for logging into the Ultravnc Windows site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Ultravnc Windows site. After that you can login as usual with your login credentials.
http://www.uvnc.com/features/authentication.html
https://www.uvnc.com/docs/uvnc-server/49-UltraVNC-server-configuration.html
http://forum.ultravnc.info/viewtopic.php?f=3&t=33481
https://www.admin-magazin.de/Das-Heft/2010/06/Remote-Desktop-mit-Ultra-VNC/(offset)/2
https://www.heise.de/download/product/ultravnc-38367
https://forum.ultravnc.net/viewtopic.php?f=71&t=33569
https://community.spiceworks.com/topic/101359-ultravnc-problems-mainly-at-windows-logon
https://www.tecchannel.de/a/ultravnc-windows-rechner-zentral-fernsteuern,2039282
https://www.experts-exchange.com/questions/27764613/controlling-windows-7-logon-screen-with-ultra-VNC.html
https://www.ip-insider.de/ultravnc-realvnc-thinvnc-im-praxiseinsatz-a-521934/
https://de.wikipedia.org/wiki/UltraVNC
https://en.wikipedia.org/wiki/UltraVNC
https://www.computerbild.de/download/UltraVNC-32-Bit-2337886.html