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What should I do if NCGuard cannot verify my AION 2 install?
Guide Q&AThe troubleshooting guide says the message can result from game-file problems or software conflicts and does not always mean an account ban. First verify AION 2 files through Steam / NC.
It also recommends fully exiting the Steam or PURPLE, restarting the PC, and checking for conflicting overlays before trying more disruptive steps.
Based on: AION 2 hacks and account bans
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Guide replies 1
From the source articleTest a normal Steam / NC launch before starting other software so you can narrow down the cause.