Windows XP
When Windows XP first released, people criticized it for having a theme that they hadn’t seen before in Windows. People thought it was very kiddish and appealing to children, not being taken as seriously for the large userbase of the time. There were also criticisms about how fragile Internet Explorer was (I’m not kidding, I was there and Internet Explorer back then was at its most insufferable.).
But these days, just because of how bad Windows 8, 8.1, 10 and now 11 have been, people have praised Windows XP so much.
Windows XP also had the problem that when it launched, a lot of people’s computers weren’t really up to running XP it very well. Windows XP will run on a Pentium III with 256 MB of ram, but it wasn’t particularly happy about it. A few years later when people when people were running XP on a Core 2 Duo with 2GB of ram, it was a much smoother experience.