When using client Hyper-V in Windows 10, the first time you switch on Enhanced Session for VM it prompts you to select resolution, then remembers your selection and never prompts again it seems. Where does resolution setting get stored, or how can I force this screen resolution prompt again to change the selected resolution?
You can use cmd.exe and type:
VMConnect.exe <ServerName> <VMName> /edit
P.S.: You can also share local hard drive (Show Options ->tab Local Resources->Local devices and resources->More) as on normal windows remote desktop session :-)
There's a much easier way - after lots of research! Simple close the VM client down - change the Hyper-V Manager settings (right-hand window of the Hyper-V console), under Server -> Enhanced Session Mode Policy, simply uncheck Allow Enhanced Session mode -> Apply -> Re-check Allow Enhanced Session Mode (this will reset). Now Start the VM in question but don't connect yet. Wait for the VM to start then right-click the VM in the console and you should see "Edit Session Settings" option - click this and the original dialogue will appear again. Done.