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2026-09-07: After more 5 000 000 (five million) views on forum for 1.8.x.x development versions... A new stable version, UltraVNC 1.8.2.9 has been released: viewtopic.php?t=38203 Feedback is always welcome
2026-04-01: After 1.7.x, 1.8.x release builds need tests and feedback: viewtopic.php?t=38158
2025-12-02: We need help: English Wikipedia UltraVNC page has been requested to deletion: viewtopic.php?t=38127 Any help is welcome to improve the UltraVNC page and/or to comment on the Wikipedia Talk page
2025-06-25: After more 2 000 000 (two million) views on forum for 1.5.0.x development versions... and 1.6.1.0, 1.6.3.0-dev versions A new stable version, UltraVNC 1.6.4.0 and UltraVNC SC 1.6.4.0 have been released: viewtopic.php?t=38095 Feedback is always welcome
I have tried installing all the above versions on a VM for windows 2003 x64. none of them will pass authentication. none of them are creating registry entries in HKCU or HKLM. I apply administrators group locally for authentication. does not even try for userID and password, only password as if I was just trying VNC authentication. I have 1.0.2.0 and 1.0.8.2 running successfully on 4 other servers with no issues (one of them being a VM). only difference is the fact that this is my first 64bit environment VM (or even physical server) that I have tried to get VNC server running on.
B wrote:This is cross-posted like crazy (3 forums). Please don't do that...
Have you tried the 32 bit download instead?
I did it to all 3 because it is the same for all 3 versions. perhaps someone knows of a fix that doesnt apply to all 3 versions. have tried 5 installers. hence the 1.0.6.5 x86 and x64, and 1.0.8.2 x86 and x64 comments in parentheses, both modes were tried.