Until now I didn't knew any special issue with SC and software firewalls - until today...
I was having more or less occasional lockups, hangs and disconnections with one of my "clients"....
At first I thought it was about his wireless internet connection and everything, until.... I just somehow noticed that Sygate Personal Firewall was giving security alerts - tray icon was always red after connecton was hanging or even broke and all alerts were about SC.exe launching winvnc.exe etc etc...
Then I knew what was needed to be done - I opened Security options of SPF and disabled driver level protection.
And what you think??? Problem was solved and I didn't experienced even one connection breakdown after that!
This was all!
Even anti-application hijacking option wasn't needed to be disabled!
Once again - this issue is about running Sygate Personal Firewall on customer machine.
With customers having Kerio firewall for example, this problem was never occuring...
It's obviously not a bug, but something, that's good to know for avoiding problems and troubleshooting SC connections.
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
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
SC and software firewalls
SC and software firewalls
Last edited by tim71 on 2005-05-24 22:45, edited 1 time in total.

