There are many similar questions but most of the answers mention a tool that splits a single desktop into different areas and make it easy to move windows from one area to another, maximize in an area etc. This applies to DisplayFusion and nView Desktop. There are other paid tools that I haven't tried, Actual Tools and iShadow Virtual Display Manager, but they seem to be doing the same thing.

None of these address my use-case: When I share (in Teams) etc the "entire screen" that should only share one of these virtual desktops. This is because I need to share multiple windows with a customer but ensure they do not see all of my windows.

Is there a software solution possible?

I thought of RDP to my localhost but that of course does not work. I came across some exotic approaches such as modifying terminal server dll and rdpwrapper but I cannot tell if they do what I need.

One comment I came across says the only way to do this is by using a dummy display emulator adapter. But I am unable to figure out how that will work: my laptop has only one HDMI port. Do I need to use a splitter?

My monitor (Dell Ultrasharp 38) does have multiple inputs and can show two screen side by side. I can probably use that but I switching from one input to another needs hardware buttons and it is quite slow.

I am wondering if it will just be easier to add another physical monitor.

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    You may add SplitView to the list of paid software. You could use the virtual desktops feature of Windows to isolate programs, but you won't be able to see both at the same time. Finally, I think that a second monitor is the more robust solution. – harrymc Mar 17 at 14:25
  • @harrymc I am hoping I can somehow convince my laptop that there are two monitors connected to it – Miserable Variable Mar 18 at 0:13
  • If you have a hardware solution by switching inputs that works for you, a KVM will make it easier. However, this is totally equivalent to the virtual desktops feature of Windows, and the later is much easier to switch with just a hotkey. – harrymc Mar 18 at 11:49
  • Have you tried Virtual Display Manager? ishadow.com/vdm/… – Mortie Mar 18 at 15:20
  • In my opinion, having a second physical monitor is always very helpful. So using it is probably the best solution – DarkDiamond Mar 20 at 22:32

As none of the products you tried truly fulfilled your demands, for both free and paid software, it's time to look at simpler and more powerful solutions.

The virtual desktops feature of Windows may allow you to share one virtual desktop, keeping the non-shared programs on another one (depending on how the sharing product works). But you won't be able to watch both at the same time.

The most flexible method would be to acquire a second monitor that would allow you to watch both at the same time. It's also the simplest and most useful solution for your work.

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