The installer UltraVNC_104_RC14_X64_Setup.exe includes the file MSRC4Plugin_NoRegx64.dsm. This file does not work on x64 Vista or XP. Clicking the "Config" button with it selected yields a box named "Plugin Activation" with the message "The Plugin cannot be loaded. Please check its integrity." Trying to actually connect using the plugin yields a box named "Plugin Loading" with the similar message "The Plugin cannot be loaded. Please check its name integrity."
-Pascal
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
2025-12-05: 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
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
Join us on social networks and share our announcements:
- Website: https://uvnc.com/
- GitHub: https://github.com/ultravnc
- Mastodon: https://mastodon.social/@ultravnc
- Bluesky/AT Protocol: https://bsky.app/profile/ultravnc.bsky.social
- Facebook: https://www.facebook.com/ultravnc1
- X/Twitter: https://x.com/ultravnc1
- Reddit community: https://www.reddit.com/r/ultravnc
- OpenHub: https://openhub.net/p/ultravnc
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
2025-12-05: 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
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
Join us on social networks and share our announcements:
- Website: https://uvnc.com/
- GitHub: https://github.com/ultravnc
- Mastodon: https://mastodon.social/@ultravnc
- Bluesky/AT Protocol: https://bsky.app/profile/ultravnc.bsky.social
- Facebook: https://www.facebook.com/ultravnc1
- X/Twitter: https://x.com/ultravnc1
- Reddit community: https://www.reddit.com/r/ultravnc
- OpenHub: https://openhub.net/p/ultravnc
MSRC4Plugin_NoRegx64.dsm does not work
Re: MSRC4Plugin_NoRegx64.dsm does not work
I get the exact same thing. Can't use multi monitors under XP Pro x64.
Re: MSRC4Plugin_NoRegx64.dsm does not work
[topic=12342][/topic]
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: MSRC4Plugin_NoRegx64.dsm does not work
Thank you for the reply, though you could have just said "Install .Net Framework SDK 3.5" 
This thread was started before the other one, which is why I posted here. All the same, thanks for the tip!
This thread was started before the other one, which is why I posted here. All the same, thanks for the tip!
Re: MSRC4Plugin_NoRegx64.dsm does not work
I think, net framework should not necessary anymore for UltraVNC while manifest was updated but there not yet UltraVNC 1.0.4 RC16 x64
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: MSRC4Plugin_NoRegx64.dsm does not work
OK, still the same problem. And the post linked to does not exist.
Is there a special plugin for XP x64 released somewhere? One that is compatible with a 32 bit viewer using the (standard 32 bit) plugin?
Is there a special plugin for XP x64 released somewhere? One that is compatible with a 32 bit viewer using the (standard 32 bit) plugin?
Re: MSRC4Plugin_NoRegx64.dsm does not work
sure
do you use the msrc4plugin 64bit from the 1.0.8.2
i can't verify, i won't have 64bit OS
do you use the msrc4plugin 64bit from the 1.0.8.2
i can't verify, i won't have 64bit OS
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

