How do you control resolution and/or scaling of icons in RDP connections in Windows 8.1?

How do you control resolution and/or scaling of icons in RDP connections in Windows 8.1?, when using either ...

• the new "Remote Desktop" store app
• the old desktop "Remote Desktop Connection"

I've got a laptop and Surface Pro 3, both Windows 8.1, connecting to a desktop PC, again Windows 8.1

The Surface is fine, if high resolution, but the laptop connection has got very large icons on the desktop

Is there some way to control this? ... not the size text for the icons, which can be changed in Control Panel\Appearance and Personalisation\Display

EDIT: added point concerns store or desktop connection

1 Answer

Jist: DPI redirection works, but only on new sessions. On existing sessions, the DPI of the existing session is used.

Please see this answer that I gave some time ago: Remote Desktop into Windows 8.1 PC with high DPI scaling