PUBG’s August 11, 2025 letter describes a lobby warning from update 37.1 when another game with its own security software is running. Record the message, close the other game normally and compare with PUBG alone. Do not name a particular product as the cause or stop security protection.
Sources
We checked these official pages and wrote the steps in our own words. Follow the publisher’s page if it has changed.
PUBG: anti-cheat introduction letter (August 11, 2025; 37.1; Japanese)Japanese version of this page