Opencodecsetup64.exe

Some codecs modify Windows system files (like msmpeg2vdec.dll ). Antivirus sometimes flags this behavior as "potentially unsafe." If you trust the source, it is a false positive.

, a popular media player developed by Kakao (formerly Daum Communications). It specifically installs the opencodecsetup64.exe

opencodecsetup64.exe is generally safe if downloaded from the official source within the last 2 years. If you found it on a torrent site or an email attachment, delete it immediately. Some codecs modify Windows system files (like msmpeg2vdec