My remote desktop session is refusing to use both monitors. Here's how they are laid out
I do have the option checked in the Remote Desktop Connection
What else can I do?
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Multiple monitor support in RDP is only supported for Windows 7 Ultimate and Enterprise according to Remote Desktop Connection: frequently asked questions . Only the connecting client needs to have Ultimate or Enterprise, the remote host can have Windows 7 Professional.
Have you tried passing /span to mstsc as
mstsc /span? It's a bit clunkier than full multi monitor support as it all appears as one monitor on the windows 7 system but might work for your purposes along with something like splitview...
(Search google for rdp wrap or rdp wrapper to get more info about what it does/how it works)
Basically, this software can be used with Home versions of Windows(7) to allow remote desktop sessions, and multiple sessions. I had installed it in that manner, and just noticed that if I connect to machine (running Windows 7 Home Premium) with this wrapper and tick the checkbox on the remote client to use all available monitors for the RDP session - IT WORKS!! I have 3 monitors and they are all active in the session and this is in true multi-mode not the stupid split-screen. So, I think it would work in similar fashion on Win 7 Pro.
I can't seem to link this comment to others about the "mstsc /span" command.
I could be wrong but my experience with "mstsc /span"
That it is a mirror of local pc to remote pc.
(I just did a remote from win10 to win7 pro.)
My findings are if your local pc has 2 screens, it pushes to remote you have 2 & stretches to match.
example: if you local has 3 the rdp session will show 3.
If your local has one but you have a large 30" it will strectch to that size.