Getting a Blank Screen from win 10 computer

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For some reason with win 10 computers with the new big update that came out this past month and also with new computers with win 10 on them .. I have been having a lot of problem accessing their systems using ultraVNC 12.16 ... where it will just be a blank screen .. I'm logged into it but its just blank ... I've tried changing the way to view the remote connection but nothing works .. is this a ongoing issue because it seem to be getting worst with every new big update from windows .. the remote connections I do are all with very high bandwidth connections .. hope anybody can help because this is getting really frustrating .. thanks for all your time