Which Version of MacOS Am I Running

Last modified 2/14/2022

You may refer to the "About This Mac" dialog under the Apple Menu to determine the version of MacOS installed on your computer.

To determine the version of MacOS you are using, do the following:

  1. Click the Apple logo in the upper left corner of the screen to open the Apple Menu apple logo for menu options.
  2. Select About This Mac.
  3. The version of MacOS in use is displayed. (Figure 1).
    3a. If you do not see information similar to the image below, make sure you have the Overview tab selected.

    Figure 1:
    About this Mac image with Operating System information

Getting Help

For Technical Assistance, you can Submit a Help Ticket, or contact the Technology Support Center at (309) 438-4357, by email at 

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