Windows Intermittent disconnects: k_EAuthSessionResponseAuthTicketCanceled → “Kick player for invalid login” → “PlatformAuth authorization failed

N

nad

Refugee
One specific player gets kicked intermittently on our dedicated server when Steam returns AuthTicketCanceled. Minutes later they can reconnect and pass all checks. This only happens in 7 Days to Die; the same player plays other Steam games with us on the same machine/server/network without issues.
Happens sporadically to this one player during active play or shortly after joining.Other players (some also on VPN) are fine at the same time.

Can anynoe have some advice, we just delete all game files and it still happening.
 
LittleNightma said:
It sounds like their connection to the server is weak, causing them to be disconnected. The game requires pretty decent WiFi.
Click to expand...
In fact no wifi period. Wired connections are the only real supported method. I have supported wireless devices for 20 years and can tell you there are to many variables in staying connected reliably even with the latest gen tech it can still be a gamble. Plus do you really want to radiate your dwelling with microwave radiation, the same radiation that emits from your microwave oven?
 
nad said:
Can anynoe have some advice, we just delete all game files and it still happening.
Click to expand...
Read the Pinned threads in this forum section. Other games are not this game, and do not tax hardware or internet the same way. Most games only utilize the GPU, and use less than half the bandwidth 7 Days does. When someone is joining the server, it can literally use 100 times more bandwidth.

The Pinned FAQ thread has a lot of details on network connections, and ensuring that security software isn't causing a problem. The Pinned post that tells you to read it before posting tells you how to post an issue. I would suggest logs from both the host, and the player having the issue.
 
Hi, I’ve read the pinned FAQ and the “read before posting” thread.
I’m not a native English speaker, so apologies in advance for any mistakes or missing details.
We’re seeing intermittent disconnects for one specific player on our dedicated server. It only happens in 7 Days to Die; the same player can play other Steam games with us on the same hardware/network without issues. At the exact time of the disconnect, all other players stayed connected—only this player was affected.

Game: 7 Days to Die v2.2
Server OS: [Windows/Linux version], Dedicated
Crossplay: [ON/OFF]; platform.cfg → platform=Steam, serverplatforms=Steam
Affected player is on a virtual LAN/VPN; others on VPN were fine

Server log (same incident):
2025-08-11 00:52:34 [Steamworks.NET] Authentication callback … result: k_EAuthSessionResponseAuthTicketCanceled
2025-08-11 00:52:34 Kick player for invalid login: [SteamID-REDACTED] [PlayerA]
2025-08-11 00:52:34 [Auth] PlatformAuth authorization failed … (AuthTicketCanceled)
2025-08-11 00:52:35 NET: LiteNetLib: Client disconnect … (DisconnectPeerCalled)

Client log from the same player/time window (sanitized):
2025-08-11 00:55:06 INF Disconnect
2025-08-11 00:55:06 INF [EOS-ACC] Disconnected from game server
2025-08-11 00:55:07 INF SaveAndCleanupWorld
(A couple of minutes later the same player reconnects and passes all checks: Steam auth OK → allowed to enter game.)

Are there known conditions in 7DTD where Steam returns AuthTicketCanceled mid join/auth, and is there a server‐side grace/retry option?
Any recommended server settings to reduce false kicks or we could test,check in order to prevernt this situation?
Sorry, I forgot to add: we were all connected to Discord (DC) voice during the session and he never disconnected there, so we don’t think this was a general internet drop on his side.

Thanks for helps
 
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