When I was 1803, I couldn't find the place in Windows 10 to change the network location for a WIFI access point to change from public to private. ALSO when I tried to change from public to private using PowerShell, it failed to change.
I upgraded to 1903! The ability to switch from public to private for a WIFI access point does indeed show up!! Finally!!
The problem is: Switching from public to private won't stay!
Step Four (I use the LEFT ARROW icon on the title bar (upper left hand corner) to return to the previous screen/dialog:
Step Five: NOTE: The network profile / location is back to PUBLIC from the previously set PRIVATE.
As you can clearly see, I'm now back to PUBLIC after clearly setting the network location to be PRIVATE!
To verify this is still the case, I used a different screen / dialog (Control Panel) to see the status of the WIFI access point:
If the system can't change the network location for some reason, Windows 10 should at least give an error message stating why?!
Yes, I have Administrator privileges on the account I'm using to try and change the network location from public to private.