Remote Desktop can fill one screen, span several, and adjust text size to suit high-resolution displays. A few settings make the difference between a cramped window and a desktop that feels local.
Full screen on one monitor
In Remote Desktop Connection (mstsc), open Show Options → Display and drag the slider to Full Screen. Or start it from a terminal:
mstsc /v:203.0.113.25:3389 /fPress Ctrl + Alt + Break to switch between full screen and a window.
Use all your monitors
Windows (mstsc): on the Display tab, tick Use all my monitors for the remote session. Or:
mstsc /v:203.0.113.25:3389 /multimonThe remote desktop then treats each monitor as a separate screen, so you can maximise a window on each one, just like a local PC.
Mac (Windows App): edit the PC, open Display and choose to use all displays.
Tip: /span is an older alternative that stretches one large desktop across monitors of the same height. /multimon is usually the better choice.
Use only some monitors
Save your connection as an .rdp file (Show Options → Save As), open it in Notepad and add or change these lines. Run mstsc /l to see your monitor numbers.
use multimon:i:1
selectedmonitors:s:0,1Fix text that is too small or too large
By default the remote session follows your local display's scaling. If it looks wrong:
- Inside the session: Settings → System → Display → Scale. Changes apply after you sign out and back in.
- In the.rdp file: set a fixed scale factor, for example 150%:
desktopscalefactor:i:150
devicescalefactor:i:100- In a window: add
smart sizing:i:1to the.rdp file so the desktop shrinks to fit the window instead of showing scroll bars.
Change resolution without reconnecting
On current versions of Windows and the RDP clients, resizing the window or moving it to another monitor updates the remote resolution automatically. If it does not, disconnect and reconnect.
Troubleshooting
- Only one monitor is used: make sure the multi-monitor option is ticked before you connect; it does not apply to a session that is already open.
- Blurry text: turn off smart sizing and use full screen at your monitor's native resolution.