When someone sends me a remote assistance request and I connect to their machine it doesn't appear that there is a way to make the window full screen.
Does anyone have way to accomplish this?
Can you try CTRL+ALT+BREAK (Switch the client computer between a window and a full screen)
If it doesn't work, I'm not sure there is a way to do that.
Select "Actual Size" (see image) and it will enlarge to one screen actual size, vice two screens smashed together on one monitor. You can scroll left and right to see the users other screen if needed.