Hi,
I'm using UltraVNC for many years and recently I decided to develop an application to broadcast mouse & keyboard through LAN to update identical computer.
So this appli is launched with psexec on remote computers (1 master and multiple clients).
I used Autoit to develop it and "SetWindowsHookEx" function on all threads.
Here is my problem : It seems with the last version of UltraVNC (1.1.9.0) that it is in conflict with my own hooks. With the previous version (1.0.8.2) it worked fine.
I'm just a newbie in dev so is there something I can do for the 2 soft work together without conflict ?
Thanks for your time.
Sorry for my english.
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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
2025-12-03: Could you please complete our poll/survey? Renaming UltraVNC files and service to be more clear: https://forum.uvnc.com/viewtopic.php?t=38128
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
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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
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Ultra VNC Server hooks + second Hook
- Rudi De Vos
- Admin & Developer

- Posts: 6976
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Re: Ultra VNC Server hooks + second Hook
There are two hooks vnchooks and schook.
winvnc.exe use the one that exist in winvnc.exe folder. ( if both exist some part is used of each hook)
1) move schook if it exist in winvnc.exe folder ( make sure winvnc isn't running else the dll is locked and can't be moved
2) test
3) move vnchook and place schook back
4) test again
You can always use the vnchook of 1082, this is compatible with the newer version.
winvnc.exe use the one that exist in winvnc.exe folder. ( if both exist some part is used of each hook)
1) move schook if it exist in winvnc.exe folder ( make sure winvnc isn't running else the dll is locked and can't be moved
2) test
3) move vnchook and place schook back
4) test again
You can always use the vnchook of 1082, this is compatible with the newer version.
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- Website: https://uvnc.com/
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- GitHub sourcecode: https://github.com/ultravnc/UltraVNC
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- OpenHub: https://openhub.net/p/ultravnc
- uvnc2me: https://uvnc2me.com/
Re: Ultra VNC Server hooks + second Hook
Thanks. I will test it as soon as possible.
Edit : Actually the problem came from UAC. I deactivated it and it works fine now.
Edit : Actually the problem came from UAC. I deactivated it and it works fine now.