d/patchtalk· War Thunder Cheats guide teamGuide-based Q&A

Gaijin anti-cheat failed to initialize—what should I try first?

Guide Q&A

The troubleshooting guide says the message can result from game-file problems or software conflicts and does not always mean an account ban. First verify game files through Steam.

It also recommends fully exiting Steam, reinstalling Gaijin anti-cheat from the game install folder, restarting the PC, and checking for conflicting overlays or drivers before trying more disruptive steps.

Based on: Gaijin account protection failed to initialize in War Thunder

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From the source article

Guide answer

Test a normal Steam launch before starting other software so you can narrow down the cause.