Dedicated server failed to add port mapping 10823 error code 2

[cnielsendk]

Anyone who knows what the error code 2 means when starting dedicated server? (Not error code 1)

The game.log shows
Warning: Failed to add UDP port mapping (10823), error code: 2
Warning: Failed to add TCP port mapping (10823), error code: 2
when starting up the server

I have tried without firewall on PC and Router as well, and it makes no different.
Server still shows the same error code when starting up server.
Telnet for obvious reason also shows that I'm not able to connect to port 10823.

I'm running on Windows 10 64bit personal edition, Farming Simulator 17.

Thanks in advance

[DukaSoft]

Is UPnP enabled on the router?
If not you'd need to forward the ports yourself

[cnielsendk]

Yes UPnP is enabled on the router

[DukaSoft]

Have you tried changing the default port in "gameSettings.xml" ?

Code: Select all

<defaultMultiplayerPort>10823</defaultMultiplayerPort>