Older web browsers like those on Windows XP don't support newer versions of SSL.

Dwedit · on July 7, 2023

There are newer web browsers that will run on Windows XP, see New Moon http://matejhorvat.si/en/unfiled/pmxp/index.htm

Even the final official build of Firefox that supported Windows XP will break on websites like Github, where a Releases page will never finish loading, and never let you download any files. But the New Moon build on that website (28.10) will work.

(Don't forget to install uBlock Origin and a current fork of uMatrix)

ogurechny · on July 7, 2023

See http://rtfreesoft.blogspot.com/ and https://github.com/Feodor2/Mypal68

Discussions of those builds can be found in relevant threads on relevant forums.