What was the worst version of the Macintosh OS for you (including Mac OS X, OS X, and macOS)? And why? Updated to reflect newer OSes.
For me, definitely Mavericks (OS X 10.9) and High Sierra (macOS 10.13). Both releases were terribly buggy, had many odd issues, and continue to do so up to their respective .5 and .6 updates. Both required reinstalls, which didn't solve anything. High Sierra was particularly appalling with security loopholes at the very start-go (embarrassing), and for me, contacts don't sync properly, no matter what I tried to do (turn on/off iCloud, do a reinstall, removed some plist files). Mavericks had Finder stack overflow issues, Migration Assistant crashed leaving users no way but to force restart their computers, and Time Machine was super glitchy. In my experience, El Captian and Lion also weren't the greatest, but High Sierra was/is a hot mess.
Note that I lumped both Cheetah and Puma (10.0/10.1) in one, because both were almost the same.
Please vote, then give your answer and why. You can choose up to two OSes.
For me, definitely Mavericks (OS X 10.9) and High Sierra (macOS 10.13). Both releases were terribly buggy, had many odd issues, and continue to do so up to their respective .5 and .6 updates. Both required reinstalls, which didn't solve anything. High Sierra was particularly appalling with security loopholes at the very start-go (embarrassing), and for me, contacts don't sync properly, no matter what I tried to do (turn on/off iCloud, do a reinstall, removed some plist files). Mavericks had Finder stack overflow issues, Migration Assistant crashed leaving users no way but to force restart their computers, and Time Machine was super glitchy. In my experience, El Captian and Lion also weren't the greatest, but High Sierra was/is a hot mess.
Note that I lumped both Cheetah and Puma (10.0/10.1) in one, because both were almost the same.
Please vote, then give your answer and why. You can choose up to two OSes.