Because Hflashplayer.exe can act differently depending on its variant, the symptoms vary. Here are the most common red flags:

In conclusion, while Hflashplayer.exe can be a legitimate part of Adobe Flash Player, its discontinued support by Adobe makes it a potential security risk. Vigilance and verification are key to ensuring it or any similar files do not pose a threat to your system's security.

Red flags here mean you should proceed with removal immediately.