I bought my first computer in 1995. It had Win95 with IE loaded. I didn’t look it up but I’m gambling that I wasn’t the first customer and that somebody owned it circa 1993, which qualifies as “early 1990s”. Incidentally, somebody that I knew and trusted told me to forget that IE is even installed and go download Netscape for free, which was a much better web-browser. I’m very glad I took that advice. As for Microsoft, that company started in 1975 and I’d heard of it in the mid-80s.
I was such a newbie with computers in 1998, I’m not sure how we wound up using Netscape as our default browser.
Even still, I can recollect navigating within Internet Explorer back then. I still remember the cartoonist icons in the interface. Hard to believe that was almost twenty years ago.