The online racing simulator
"Could not connect to master server"
everything is fine here.
Here it's working everything as how it should.

Try restarting PC/Router
Quote from borja_s13 :Here it's working everything as how it should.

Try restarting PC/Router

I've restarted both, my computer and my router.
Same result.
turn off the Firewall to see, if that helps.
well...u could try to re-install.
also, check in the ehternet settings if there is any proxy set.
Quote from [RCG]Boosted :well...u could try to re-install.
also, check in the ehternet settings if there is any proxy set.

I don't think reinstalling would do any difference, I have other installations that I've tried, they have the same issue.

I also don't have a proxy set.
I bet you've only stopped the firewall on windows but not the one of the router/gateway. Try to stop it and test again.

Otherwise try to ping a server outside your network (ex.
ping www.microsoft.com

).
If this works try if other games connect to multiplayer sessions.
This could be useful to get a more detailed description of your problem.
Quote from KlausAdam :I bet you've only stopped the firewall on windows but not the one of the router/gateway. Try to stop it and test again.

Otherwise try to ping a server outside your network (ex.
ping www.microsoft.com

).
If this works try if other games connect to multiplayer sessions.
This could be useful to get a more detailed description of your problem.

Its working with the router firewall off, LFS is the only game that multiplayer doesnt work on.
Tested 4 other games and they all seemed to work fine.

What addresses does LFS need? and ports? As I can't leave the firewall disabled, I'm allowing the ports needed.
cfg.txt (recovery) delete.
or you can try to create a new rule that allows LFS.exe in the windows firewall.
Forgot to say, we're talking about router firewall.
I had a problem with the list of LFS servers with my router.
This came from a protection against the "tcp flood" in the router. I turned it off and I no longer encountered any problems. It may be the same thing in your case.
Do a trace route and let the devs know. It may happend that you can be blocked by their firwall. Not sure but it might be possible.

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