Content Protection Error.. Ticket #139433

[signcarver]

Also keep in mind not all 4K monitors have the required hdcp at 4K if that is what you are running it at and all connected displays must be HDCP (in theory an analog vga monitor doesn't need hdcp if connected but in practice it might which is "impossible")

[neoark]

Are any of them run in GSync or freesync mode, or running at higher refresh rate mode? I heard that can cause HDCP problem as well.

They all are running at 60 refresh rate.