Released around 2010, version 3.91 was a notable update for its time, particularly for 64-bit Windows users. 64-bit Performance
VirusTotal scans of actual WinRAR.v3.91.x64.Incl.Keyfilemaker-CORE samples from 2010–2023 show detection rates of 45–68% for: WinRAR.v3.91.x64.Incl.Keyfilemaker-CORE--tracker
It optimized the RAR algorithm to better handle large files, which was necessary as high-definition video and large game installers became common. Released around 2010, version 3