Since Adobe Flash Player reached its "End of Life" (EOL) on December 31, 2020, modern browsers (Chrome, Edge, Firefox, Safari) now block Flash content by default.

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This error message is a digital fossil. Adobe Flash Player was officially discontinued and blocked by all major web browsers and operating systems in January 2021

Q: Why do some applications still require Flash Player? A: Some applications or websites may still require Flash Player due to legacy reasons or specific technical requirements.

Why this specific sub-version? Because 9.0.246 fixed a critical security vulnerability—one of hundreds that would plague Flash over its lifetime. But the end user never cared about the security bulletin. They cared about the game. That message wasn’t an error; it was a locked door.