Using Windows Remote Desktop viy OpenVPN

[Jochen42]

I want to access a Windows Computer in the company network from my computer at home with the Windows Remote Desktop App

Here is my setup:
Remote Desktop in the local company network works.

The Computer I want to access is configured as OpenVPN Server, community version.

From my home office I can start the opnVPN connection with OpenVPN GUI.

In the Windows Remote Desktop App I use the IP-Address 10.8.0.1:10997 as the "computer name". This is the IP adress which I use successfully for another service which connects to the remote network.

But I get an protocol error.

Is it necessary to configure a gateway in the Windows Remotedesktop app? I tried the same IP 10.8.0.1:10997 but got the same error.