I donlwoaded firefox 97.02 for US-en 64 bit from https://www.mozilla.org/en-US/firefox/all/#product-desktop-release and got 4 hashes that did not match Mozilla's official sha256 hash of 68c40b3f98c7d095cea5dbfd049dd2972e4d7a72758a5ec82d9a19e1f6e10865 obtained from https://ftp.mozilla.org/pub/firefox/releases/97.0.2/SHA256SUMS These incorrect hashes below are verified by Virustotal.com as belonging to Mozilla. I have installed one and it appears to be Firefox 97.02 US-en 64 bit. I placed this information on the r/firefox forum and it was closed. Bad sha256 for firefox 97.02 us-en 64 bit 941d04335f3dc6ab575a4fed86bbe7a8799b4637d1b97dff5418ee82ff70aeda Firefox Setup 97.0.2(2).exe 8acf6daec77c14e10d65ce9650514ef99cb22bac6a865f483426dc330feb4f57 Firefox Setup 97.0.2 (3).exe 9908246c9cb54fe8c00dbef46a19def6cc453fb7f45b41bcf3662771ae6224f0 Firefox Setup 97.0.2.exe 42af39bf6de2f100ac3d5adb6861b2850fe49d6a5f4978545fc47aedb44c9669 Firefox Setup 97.02(4).exe Virustotal.com can allow you to search the sha256 hashes above. Mozilla created the files but it is not listed in there sha256 official hash repository.