The last version of OBS Studio that runs under Windows 7 is Version 27.2.4 and you can find the download page for it here:
https://github.com/obsproject/obs-studio/releases/tag/27.2.4
Personally, I think the OBS team is shooting themselves squarely in the face by no longer supporting Windows 7 or even earlier versions of Windows (like the mega popular XP and NT - both of which are still in use widely).
I myself can not stand Windows 10 or 11 and absolutely can not use either in a production environment, Winin 5 mintues of trying to use either I'm screaming at the computer pulling out my heair just to try and do the most basic things. WIndows 7 isn't great, but at least there's not an ocean of cruft ware to drown in and chart funk and everything in the control panels is where it should be. WIndows 10 and Windows 11 are absolutely unusable for anything. The best I can do with either is to beat them into looking as much to look like Windows 7 as possible, but even still, I would not want to do anything more than Web browsing with them. Video editing game footage under Windows 10 or 11? Forget it. Absolutely forget it...
Sometimes newer version sare actually great steps backwards. ANywone remember Vista and Windows Millenium. yeah.
This note is mostly for me in the future.
I never plan to switch from Windows 7. Ever.
Twenty years from now I'll still be using Windows 7.
CHOPPERGIRL
sp.air-war.org
p.s. every time you checkout something at Wlamrt through self checkout, you use Windows XP.