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Author Topic: X11VNC Password failed when connecting from Windows  (Read 107 times)

Offline TinyIDIPS

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X11VNC Password failed when connecting from Windows
« on: September 05, 2026, 02:07:12 PM »
Started X11VNC with x11vnc -forever -bg -passwd PASSWORD

No connect from windows possible (UltaVNC, TightVNC), password mismatch. Changed password several times without success.

Tried x11vnc -storepasswd followed by x11vnc -usepw -forever -bg -> no success. Also x11vnc -rfbauth ~/.vnc/passwd without success.

I checked ~/.vnc/passwd, password stored in cleartext. I think it has to be encrypted.

I there a password bug or any ideas how to successfully connect from windows?

Offline gadget42

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Re: X11VNC Password failed when connecting from Windows
« Reply #1 on: September 05, 2026, 03:45:08 PM »
perhaps reviewing this Arch wiki regarding x11vnc might provide some clues and/or insight:

https://wiki.archlinux.org/title/X11vnc

edited to add an additional link/url:

https://tombuntu.com/index.php/2007/06/27/remote-access-from-windows-x11vnc/

20260905-1449-cdt-usa-modified: added text and link/url
« Last Edit: September 05, 2026, 03:49:23 PM by gadget42 »
** WARNING: connection is not using a post-quantum key exchange algorithm
** This session may be vulnerable to "store now, decrypt later" attacks
** https://openssh.com/pq.html - https://blog.cloudflare.com/tag/post-quantum
** Where's-Your-Disconnect?  https://www.cloudflare.com/under-attack-hotline

Offline TinyIDIPS

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Re: X11VNC Password failed when connecting from Windows
« Reply #2 on: September 05, 2026, 04:15:50 PM »
I do not find a solution for the problem.

By the way: I installed SliTaz for testing. Using x11vnc there works as expected.

So I think there must be a problem with the x11vnc package or server.
 

Online Juanito

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Re: X11VNC Password failed when connecting from Windows
« Reply #3 on: September 06, 2026, 04:56:15 AM »
libvncserver and x11vnc updated in the x86_64 17.x repo in case that helps.

Offline TinyIDIPS

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Re: X11VNC Password failed when connecting from Windows
« Reply #4 on: September 06, 2026, 12:56:17 PM »
Thank, I checked this, but the x86_64 version does not run on my thinclient. Can you update x86 repo?