Use Microsoft Remote Desktop Find the default.rdp file and edit it in notepad. Enter these anywhere in the file, end is easiest screen mode id:i:1 use multimon:i:0 desktopwidth:i:2560 desktopheight:i:1440 smart sizing:i:1 the width and height define the resolution that you want to connect at on the VM smart sizing allows the screen to scale It should "hopefully" work for you, good luck
I had issues with a high DPI screen: resolution under MSFT RDP sucked. If you have a 4K screen the following may help: Regular Remote Desktop is not aware of DPI scaling but Microsoft Remote Desktop Manager is. Link to MSFT http://www.microsoft.com/en-US/download/details.aspx?id=21101 Tab: Remote Desktop Settings, uncheck Inherits from Parent Select Full Screen under Remote Desktop Size. Have 3840x2160 and using the manager instead of regular Remote Desktop worked perfectly.