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How do I determine what version of Mac OS is on my Mac?

Challenger Support -

Here's how...

  1. Click on the Safari menu in the Safari menu bar.
  2. Select About Safari to display a small window listing the version of Mac OS on your Mac

If you have additional questions or experience any difficulties, please submit our support form or contact us by phone at 1-888-242-5536. We offer free, live, US-based support Mon – Fri, 8am – 5pm CT.

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