Information about SCP:ET related game errors. - SCP:ET Official Wiki
About Game Errors

A game error is an issue that arises that prevents a user or multiple users from connecting to a server, or may cause users to lose connection to a server.

Error Type Description
Missing args (code x)
Invalid Argument.
Authentication The authentication request was missing a valid parameter and cannot authenticate. This error only occurs when a malformed request is sent. 0 = Missing token, 1 = Missing Steam ID, 2 = Missing Server IP, 3 = Missing Player IP or missing version.
Version mismatch Authentication You are on a version that is different than the version of the server. This can be due to many different reasons, including an outdated client, or a public beta. Ensure the server that you are attempting to connect to is on the same version as you are. The server might be updated to match a beta, whereas your client is not. Likewise, you may be in a beta when the server is not, or you may be on an outdated version of SCP:ET.
You are not authorized to play on this SCP:ET build Authentication You are attempting to connect to a server on a beta version of the game that you are not authorized to play. This may be due to illegitimate sharing of a private beta code. Ensure that you have proper access to the beta you are attempting to connect to.
Client failed to authenticate in time Authentication Authentication did not complete before it expired. This error can happen due to many different reasons. Often times, attempting to re-connect fixes the issue right away, however it could also be related to a slow internet connection.
There are currently no relays available Authentication Occurs when attempting to connect to a Relay server during an LRM Relay outage. Report the issue to SCP:ET developers if it has not already been reported, and wait for a fix from them.
Authentication has been rejected by a server modification. ServerMods Occurs when a server modification, such as a plugin, prevented you from joining the server. Questions about this error should be directed to the owners of the server, who will likely know what modification is preventing you from joining.
You have been banned for cheating Gameban You have been manually banned for cheating on a public server. This ban can only be applied by SCP:ET global moderators. You cannot play on public servers globally, and you can only play on private servers that choose to ignore global bans. This ban cannot be revoked - do not cheat.
Active Publisher ban for app: SCP: Escape Together. Gameban You have an active Steam ban for SCP: Escape Together.
You have been kicked by an administrator. ServerBan You have been removed from a server by a staff of the server, likely for breaking the rules of said server. Kicking is typically used as a warning, however usage of kicks is up to discretion of the staff team of the server. You can rejoin a server you have been kicked from. Kicks are NOT applied by SCP:ET staff, but rather by staff from the server itself.
You have been banned by an administrator. ServerBan You have been banned from a server by a staff of the server, likely for breaking the rules of said server. You will be unable to rejoin a server that you have been banned from, unless your ban is removed by the server's staff team. The SCP:ET team CANNOT remove bans that are applied by a server's staff team. You will need to speak to the staff team of the server in order to appeal a ban.
Banned from server. ServerBan you have been manually banned for breaking the rules of a public server. These bans are issued by staff teams of the server that you are banned from, not the ET development team. You will be unable to rejoin a server that you have been banned from, unless your ban is removed by the server's staff team. The SCP:ET team CANNOT remove bans that are applied by a server's staff team. You will need to speak to the staff team of the server in order to appeal a ban.

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