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Appalachian State University's IT currently follows the model of supporting the latest released version of macOS (following an internal testing period) and one version previous. 

The currently supported operating system versions are: 

  • macOS 11 (Big Sur)
  • macOS 10.15 (Catalina)

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In January 2021, ITS began notifying users of their available eligibility for macOS upgrades in an effort to ensure system security. The message you see will depend upon how many versions back from our recommended version of macOS you are currently running and what your Mac is eligible to run. See the different types of notifications you may receive below. If you have not received a notification but want to upgrade, follow the steps to Perform macOS Upgrades.

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