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A new stable version, UltraVNC 1.6.4.0 and UltraVNC SC 1.6.4.0 have been released: https://forum.uvnc.com/viewtopic.php?t=38095
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2026-03-11: CVE-2026-3787 and CVE-2026-4962 - Clarification: https://forum.uvnc.com/viewtopic.php?t=38155

2025-12-02: We need help: English Wikipedia UltraVNC page has been requested to deletion: https://forum.uvnc.com/viewtopic.php?t=38127
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Development: UltraVNC development is always here... Any help is welcome
Feedback is welcome

Help is very needed for:
Windows ARM/ARM64 support: https://forum.uvnc.com/viewtopic.php?t=38163 / https://github.com/ultravnc/UltraVNC/issues/346
macOS support: https://forum.uvnc.com/viewtopic.php?t=38164 / https://github.com/ultravnc/UltraVNC/issues/347
Linux support: https://forum.uvnc.com/viewtopic.php?t=38165 / https://github.com/ultravnc/UltraVNC/issues/348
*BSD support: https://forum.uvnc.com/viewtopic.php?t=38166 / https://github.com/ultravnc/UltraVNC/issues/349
*Solaris support: https://forum.uvnc.com/viewtopic.php?t=38167 / https://github.com/ultravnc/UltraVNC/issues/350

MSRC4 doesn't work via Http

Should you have problems with the DSM Plugin? Here is the place to look for help or report issues
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NM
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MSRC4 doesn't work via Http

Post by NM »

When I use MSRC4 plugin with same key on all computers I can't access any of them via Http.

Although I enter the correct address http://123.456.789.10: 5800/ I get

'Error. Host xyz.xyz.xyz.x port 5900 is not a RFB server'

In order to access any of the computers I must deactivate the DMS plugin.

Any one knows why the change to port 5900?

Solution ???

Thanks

Norbert
redge
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Re: MSRC4 doesn't work via Http

Post by redge »

dsmplugin not supported and would never supported at all over http.

workaround
[topic=5318][/topic]
UltraVNC 1.0.9.6.1 (built 20110518)
Windows OS: XP Home + Vista Business + 7 Home
Only experienced user, not developer
NM
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Posts: 14
Joined: 2007-01-10 15:00
Location: Barbados
Contact:

Re: MSRC4 doesn't work via Http

Post by NM »

Thanks redge...

My apologies for wasting your time re 'MSRC4 doesn't work via Http' Digging through the various tropics after my post I did see comments about the subject.

I do have an other question but it doesn't belong here. Will post it in General Help.

Norbert
Norbert Majerus
Barbados
redge
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Re: MSRC4 doesn't work via Http

Post by redge »

NM wrote:Digging through the various tropics after my post I did see comments about the subject.
from UltraVNC FAQ
[topic=63][/topic]

- DSM Plugin: feasibility not proven. Has to be investigated further.
UltraVNC 1.0.9.6.1 (built 20110518)
Windows OS: XP Home + Vista Business + 7 Home
Only experienced user, not developer
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