Template:Disconnect reasons

Disconnect messages
Message	Meaning
Disconnected by user	User manually disconnected from the server.
Removed from match by system	User was taken to another match by the matchmaking system.
User was VAC banned from secure server	User was caught cheating and was banned from the server by the Valve Anti-Cheat (VAC), or tried to connect to a VAC-secured server while having a VAC ban for Team Fortress 2.
Steam auth ticket has been canceled	The game crashed during loading, the "auth ticket" refers to a user identification system used by Steam's networking.
An issue with your computer is blocking the VAC system.	Third-party software is interfering with the user's game or with their Steam client which prevents VAC from working. See this Steam Support article for help.
Issued too many commands to server.	Certain console commands[Which?] can cause the server to lag, inputting too many of these commands kicks the player to prevent server lag.
Buffer overflow in net message	Caused by an overflow of information in networking messages. Most often happens in Mann vs. Machine when refunding a large amount of upgrades or when changing classes with a large amount of upgrades, and in other game modes when too many players are using the voice chat.
This Steam account does not own this game. Please login to the correct Steam account.	The account has been locked by Valve and cannot play on VAC secured servers.
Bad challenge	Something went wrong when connecting to the server, can be caused by slow connection.
Connection failed after 4 retries	The client cannot establish a connection with the server.

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Documentation for Disconnect reasons

A list of disconnect reasons. Note that as of right now, no translations are available for these messages. It is not necessary to add them as it would be inaccurate to the game, but if you do, please also add the English term.