How to check a Mac’s OS upgrade history in System Profiler

You can check to see which updates have correctly installed for macOS.
macs desk pexels
  • MacOS
  • Mac
  • Operating Systems
Glenn Fleishman’s most recent books include Take Control of iOS & iPadOS Privacy and Security, Second Edition (covering iOS 15/iPadOS 15), Take Control of Your M-Series Mac, and Take Control of Securing Your Mac. In his spare time, he makes Tiny Type Museums. He’s a senior contributor to Macworld, where he writes Mac 911.