If you specifically need a standalone file for archival purposes, the Internet Archive
Let’s assume you have located a trustworthy repack of Internet Explorer 8 Portable. Here is how to use it safely. internet explorer portable old version
Legacy enterprise support, vintage computing hobbyists (offline or isolated network). Not recommended for: Anyone who values security, speed, or a functional modern web. If you specifically need a standalone file for
: A free browser that allows you to render pages using the engines of IE5.5 through IE10 within a single application. internet explorer portable old version
I dragged the file into the IE6 Portable window.
: Developers use old versions to ensure backward compatibility or to troubleshoot how a site "mangles" pages in legacy environments.