ACE COMBAT 8 error ST-3200003: kicked from online lobby
Written by
Last checked
October 9, 2026
Joining an ACE COMBAT ONLINE lobby kicks you out with error code ST-3200003.
Also appears as: ST-3200003, ST3200003, st 3200003, ace combat 8 kicked from lobby, ace combat 8 linux online error, ace combat 8 steam deck multiplayer, ace combat 8 easy anti-cheat linux
Linux, Proton and Steam Deck players report being kicked from online lobbies with ST-3200003 since launch. In a Steam thread (72 comments), they say it is because Easy Anti-Cheat isn't enabled for Linux and ask Bandai Namco to turn it on. That is player consensus; Bandai Namco hasn't commented that we could find.
One Windows player reports the same code after online worked, with the clock synced and anti-cheat reinstalled and no change. Nobody has explained that case.
Bandai Namco's official notice defines a different code, ST-3100001, as lost server communication. It doesn't mention ST-3200003.
No problems reported in the last 15 minutes.
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- 01Reported
On Linux or Steam Deck, play online from Windows for now
Players in the Steam thread say Linux users are kicked from online lobbies until Bandai Namco enables Easy Anti-Cheat for Linux, so online play currently means running the game on Windows. The thread's original poster says the rest of the game works fine. This is what players report, not a Bandai Namco statement.
- 02Unconfirmed
Clock sync and anti-cheat reinstall did not fix it for one Windows player
On 8 October, a Windows player kicked from online play synced their date and time and reinstalled the anti-cheat, and the error still appeared. Nobody else in that thread described a fix.
- 03Unconfirmed
No confirmed fix yet
No confirmed fix yet; this page will be updated. Bandai Namco has not commented on ST-3200003 or on Linux support, as far as we could find. Check the ACE COMBAT 8 status page for current problems.
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