The Chicago build of Windows 95 was one of the most stable OSes I've ever encountered. I had a machine that ran it 24/7 with zero issues into the early 2000s until the power supply fried.
https://www.cnet.com/news/windows-may-crash-after-49-7-days/
You make a grown man cry, You make a grown man cry
Interesting. Re stability, people bitched Windows 95 a lot, but I only encountered serious issues when 98 came out. XP was very stable... but don't get me started on Windows ME.
The author of that was kind enough to send me the Delphi source code and since then I was hooked on OOP.
Such interesting times.