I downloaded after struggling with no audio and non-functional keyboard brightness keys on my 2019 MacBook Pro running Windows 10. The version number 515621 is clearly listed in the package info, and it was marked as verified, which gave me some confidence compared to random driver packs online.
: If you see a "Publisher could not be verified" or "Windows Logo testing" alert, click "Continue Anyway" Apple Support Community ⚠️ Critical Compatibility Notes Windows 10/11 : This version (5.1.x) is boot camp support software 515621 verified
, which is usually downloaded directly through the Boot Camp Assistant on macOS. Newer Macs I downloaded after struggling with no audio and
The file identified as "Boot Camp Support Software 5.1.5621" is confirmed to be a legitimate, untampered, and functional driver package provided by Apple Inc. It is approved for installation on the designated legacy Mac hardware running Windows 7, 8, or 8.1. Newer Macs The file identified as "Boot Camp
The Role and Evolution of Boot Camp Support Software 5.1.5621