How do I update my Mac High Sierra 10.13 to something 10.14 or greater

Back up your data, check your applications for compatibility, and depending on which Mac model you have, click on Mojave, Catalina, Big Sur, or Monterey; it needs to be at least a 2012 one, or a 2010 desktop Mac Pro upgraded with a Metal-capable graphics card, to run a newer OS. If you get a Mac App Store preview page, change the https at the beginning of its address to macappstore.

Catalina and newer won't run 32-bit software; download and use Go64 to scan for it. To look up other programs, click here.

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