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: https://forum.uvnc.com/viewtopic.php?t=38095
Feedback is always welcome

2025-12-14: 1.7.1.X-dev release builds need tests and feedback: https://forum.uvnc.com/viewtopic.php?t=38134

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

2025-05-06: Forum password change request: https://forum.uvnc.com/viewtopic.php?t=38078

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

VNC Single Click failed with DSMPlugin

Should you have problems with the DSM plugin? Here is the place to look for help or report issues
Post Reply
mo1209
Posts: 2
Joined: 2010-05-13 10:36

VNC Single Click failed with DSMPlugin

Post by mo1209 »

Hi all,

I downloaded the UltraVNC single click ( custom.zip), and then edit the helpdesk.txt, but didn't edit the rc4.key. And then upload to VNC SC online creator.

Case 1: When I run the viewer-listen mode, client's computer double click the SelfSC.exe and select the connection, it pop up below message:

Connection failed- Invalid protocaol!
Possible causes:
- you've forgotten to select a DAMPlugin and the Server uses a DSMPlugin


Result: failure to have VNC connection

Case 2: Before I upload the SelfSC.zip to VNC SC online creator, I deleted the rc4.key. Client's computer run the SelfSC.exe, it pop up below message:

Missing r4c.key file

Result: VNC connection works

*I try to copy the default r4c.key from the SelfSC.exe. and copied to ProgramFile/UltraVNC, but it also doesn't work.

I don't need to use RC4.key, how can I work fine with Single Click ?
mo1209
Posts: 2
Joined: 2010-05-13 10:36

Re: VNC Single Click failed with DSMPlugin

Post by mo1209 »

Anyone can help?
YY
200
200
Posts: 996
Joined: 2006-11-13 15:11

Re: VNC Single Click failed with DSMPlugin

Post by YY »

mo1209 wrote:I don't need to use RC4.key, how can I work fine with Single Click ?
I suppose you means do not need the encryption (RC3.key is used by the MSRC4Plugin), then the host definition inside the helpdesk.txt must not have the "-plugin" option, should be something like this:

Code: Select all

[HOST]
Internet support
-connect xx.xx.xx.xx:5500 -noregistry
Re-upload your .zip file with this change, the created SelfSC.exe will work w/o using the encryption.
Post Reply