In Windows 7, I am in a Remote Desktop Connection Full screen. I accidentally pop it down to “window” size (i.e. when it can be resized), but the window refuses to go back into Full Screen mode.
On the host machine (not the machine you’re remoted into), press
CTRL+ALT+Pause for laptops that don’t have a Break key).
On laptops, there may be an extra step. For example, on my laptop, this combination was
Insert doubles as the
Pause key on my machine, and
Fn is the button to toggle the alternate meaning).
With the right combination of keys, this places Remote Desktop back into full-screen mode.