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Why does the installer say my computer doesn’t have a valid serial number?

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By Björn Hall

January 4, 2023

HiddenApp requires a valid Apple serial number. Follow these instructions to check that your computer has a valid serial number:

  1. Click on the Apple menu icon on the top left of your screen
  2. Choose “About This Mac”
  3. The Serial Number is at the bottom of the list
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