[rkagerer]

I'd like to snag that latest previous version which still has compatibility with older OS's, anyone have a reliable link handy?

(I couldn't quickly find a "Previous Versions" list on their website)

[chenxiaolong]

It looks like all the old files are still hosted on the server. You can just replace the version number in the download links with one of the tags from https://git.zx2c4.com/wireguard-windows.