Killing Floor 2

Killing Floor 2

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Killing Floor 2 > Bug Report > Topic Details
pawamoy Apr 3, 2019 @ 10:16am
Cannot join servers
I recently changed ISP but seeing that others have this problem makes me wonder if it's not Steam or KF2's fault indeed. This problem started after the last big update, and also after I changed ISP (debugging is harder, I'm so lucky...).

The servers list is working well, but when clicking on join, nothing happens, or I get a "Connection Lost" after a few minutes. Sometimes it works though (after long minutes as well) but only when the game starts again at wave 1 it seems.

I set up port triggering, but it did not help at all. Also my router does not block any ports so I'm not sure why I should need port triggering. I never needed it before.

I used the ports listed here, plus others I found while listening to the network.

27060 TCP
27036 TCP/UDP
57343 TCP
27015 UDP
9989 UDP
20560 UDP
7777 UDP

But it does not help at all. I still cannot join servers.

Also when I click join, there's a new random port that is used, usually between 30000 and 65535 (the max). Obviously I CANNOT set port triggering on such a large range, because I'm not the only one using the router (if I understand port triggering correctly, the router would then send traffic received on these ports on my device only, potentially preventing other devices to use network correctly).

Maybe worth noting: finding a match, creating a match and spectate do not work either. When I click on Server Details, I don't get the list of players.

Any help or feedback would be much appreciated!
Last edited by pawamoy; Apr 3, 2019 @ 10:29am
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Showing 1-4 of 4 comments
Fair Warning Apr 6, 2019 @ 2:36am 
it though it was only me damn. i did everything reinstall the game, change where is installed, delete folders, inis, open ports on windows, forward ports on my routher... nothing.
FrizzleFry Apr 6, 2019 @ 9:49am 
Have same issue here with all my multiplayer! Even friendlist is off!
Problems started 1st while freeweekend players joined, that was last wekend! There were more kf2 inventory bugs.

pawamoy Jun 17, 2019 @ 4:32am 
Update: it was my ISP's fault. Their firmware is bugged. They downgraded it to the previous version and now it works. They are working on a fix.

A good tip I saw somewhere else: try to play by sharing your mobile connection (4G/LTE) by wifi or usb (you'll need to restart steam and kf2). If the problem persist, then it must be steam or kf2's fault, else the problem lies between your machine and internet (firewall, PLC, router, ISP).
TheLastShadow Jun 18, 2019 @ 12:42pm 
I'm not getting connection lost, I keep getting "Unable to find server of specific type". I tried every combination and it just could not join. It is 100% KF2.
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Killing Floor 2 > Bug Report > Topic Details
Date Posted: Apr 3, 2019 @ 10:16am
Posts: 4