Hi all!
I'd been using VNC a lot for the last few years and never got any problems i couldnt solve but this one i had while trying to enable encryption plugin in order to setup a secure conection using UltraVNC-SC.
Scenario
- PC1 Runs VNCViewer in listening mode on port 5500 by the following start command:
vncviewer.exe -listen -dsmplugin MSRC4Plugin.dsm
- PC2 runs ultraVNC-SC for Rel1.00.
- UltraVNC-SC [host] section inside helpdesk.txt file:
[HOST]
Test 128bits encryption
-plugin -connect X.X.X.X:5500 -noregistry
- 128bits rc4.key and MSRC4Plugin.dsm files are the same on both PCs
When PC2 calls PC1 the result is :
Connection failed - Error reading Protocol Version
Possible causes:
- You've forgotten to select a DSMPlugin and the Server used a DSMPlugin
- Viewer and Server are not compatible (they use a different RFB protocoles) << misstypo?o.O
Can u guys tell what am I doing wrong?
Tx in advance.
Cheers
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Feedback is always welcome
2025-12-05: Celebrating the 23th anniversary of the UltraVNC (26th anniversary since the laying of the foundation stone): https://forum.uvnc.com/viewtopic.php?t=38130
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There was a problem to vote, it is solved now! Thanks in advance!
2025-12-02: We need help: English Wikipedia UltraVNC page has been requested to deletion: https://forum.uvnc.com/viewtopic.php?t=38127
Any help is welcome to improve the UltraVNC page and/or to comment on the Wikipedia Talk page
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2023-09-21: Important: Please update to latest version before to create a reply, a topic or an issue: https://forum.uvnc.com/viewtopic.php?t=37864
Development: UltraVNC development is always here... Any help is welcome
Feedback is welcome
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Connection Error using DSM plugin
Re: Connection Error using DSM plugin
build of msrc4plugin ?
you should use MSRC4plugin 1.2.2.0
you should use MSRC4plugin 1.2.2.0
UltraVNC 1.0.9.6.1 (built 20110518)
Windows OS: XP Home + Vista Business + 7 Home
Only experienced user, [u]not[/u] developer
Windows OS: XP Home + Vista Business + 7 Home
Only experienced user, [u]not[/u] developer
Re: Connection Error using DSM plugin
Also make sure when creating the exe that you use
Rudi
Rudi
The creator based on rel1.00 allow defaults to be overwritten.
Bevtech
Windows XP Home, Pro SP2, Windows 2003 SBS server SP2 (EN), Windows Media Center Editon 2005, Windows Vista Home Premium, Fedora Core 6, Windows 9X, PcHelpWare 1.0, UltraVNC 1.0.8.2
User not developer ;)
Windows XP Home, Pro SP2, Windows 2003 SBS server SP2 (EN), Windows Media Center Editon 2005, Windows Vista Home Premium, Fedora Core 6, Windows 9X, PcHelpWare 1.0, UltraVNC 1.0.8.2
User not developer ;)
Re: Connection Error using DSM plugin
ya, right there, it was the version of the msrc4plugin i had 1.2.0.0
the following works great:
UltraVNC ServerSC 20.03(Rel1.00)
UltraVNC Viewer 1.0.2
MSRC4Plugin: 1.1.6.0
tx all!
the following works great:
UltraVNC ServerSC 20.03(Rel1.00)
UltraVNC Viewer 1.0.2
MSRC4Plugin: 1.1.6.0
ya, ill do thatredge wrote:you should use MSRC4plugin 1.2.2.0
tx all!

