Type Public
Category Configuration
Subject Part of the host screen does not update on the remote screen when using VNC
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Part of the host screen does not update on the remote screen when using VNC


Sometimes depending on the application that is running on the HOST system ( i.e. host computer that one is
connected to ... ) the screen on the REMOTE system ( i.e. where you are running iTivity from to connect to
the HOST system ... ) does NOT fully refresh or update to match to the REMOTE user's screen.

Typically we can see this happen when perhaps the HOST system is running an application that
happens to update a small area of the screen with the current time. Such a small change may not
be sent over to the REMOTE system and so they would be not 100% in sync.

This problem is specific to the VNC viewer's and NOT the RDP viewers.

To alleviate this problem we have a group of registry settings ( for Windows )
that when applied should solve this problem completely.

FOR A Windows 32 bit system use the registry path below :

[HKEY_LOCAL_MACHINE\SOFTWARE\Tridia\TridiaVNC\WinVNC3\Default]
"PollUnderCursor"=dword:00000001
"PollForeground"=dword:00000001
"PollFullScreen"=dword:00000001
"OnlyPollConsole"=dword:00000000
"OnlyPollOnEvent"=dword:00000001


FOR A Windows 64 bit system, use the registry path below :

[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Tridia\TridiaVNC\WinVNC3\Default]
"PollUnderCursor"=dword:00000001
"PollForeground"=dword:00000001
"PollFullScreen"=dword:00000001
"OnlyPollConsole"=dword:00000000
"OnlyPollOnEvent"=dword:00000001



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