I think after last update on win10, snipping tool stop ctatching second display. It catch only main, second bacame gray (or actually black, gray is overlay).

ps

I tried programm named "Greenshot" (analog of snipping tool), and it also wont catch second screen.

Also sneeping tool from win 7 act same way. I guess it not fault of snipping tool.

pps

I tried capture screen through Graphics.CopyFromScreen in vb.net, and... there is only main screen, in that place where second should be is just nothing (not black, not white, just nothing, tranpasarent pixels)

PPPS

Ok, i figured it out. Second time i'm reporting something in such plase, and second time it is problem with COMODO.

I guese it installed (besides CIS) a Comodo Essential, maybe with KillSwitch but not this CIS.

I think it some antimalware module (or stand alone programm), and for some reason it blacked from capturing not main display...

Well, case closed...

Hi Tom,

Thank you for sharing your solutions and experience here. It will be very beneficial for other community members who have similar questions.