Goodnight.!!
I’m having trouble accessing vnc on a machine. After I installed Avast. I can access only by disabling the modules. Ultravnc is digitally signed and I tried to install the certificates (ultravnc) on the computer without success.
Do you have any error messages?
Can you temporarily disable the shields and let me know if it makes a difference? If it does, please enable it one by one to see which one is causing the issue.
(Right-click on the Avast Antivirus icon in the system tray > click on Avast Shields Control > select an option)