MacOS Catalina - Won't download from App Store

Hi,


I am trying to download MacOS Catalina from the App Store but it won't download - It just shows a progress bar and under that says 'Calculating...'


I have left it all day but has not moved. Strangely the MacOS Catalina update does not show if I go to About This Mac > Softward Update.


I am currently running MacOS High Sierra 10.13.6


Can anyone shed any light on this?


Thank you

MacBook Pro 15", macOS 10.13

Posted on Mar 30, 2020 10:04 AM

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Posted on Mar 31, 2020 12:03 PM

Did you try running First Aid? You can also try upgrading while in Safe Mode:


About Using Safe Mode



Boot Into Safe Mode


  1. If your Mac isn’t already shut down, then shut it down and wait at least 30 seconds before rebooting.
  2. Immediately, at or before the chime, press and hold down the SHIFT key. 
  3. Release the key after the Apple logo and progress bar appear.
  4. Safe mode startup is much slower than normal startup, so be patient.
  5. When the Login Screen appears enter your admin password. If you use automatic login, then this means you are in safe mode.


While in safe mode try upgrading. Be sure that you delete any prior downloads of the same installer before re-downloading. You may just have a slightly messed up installer download.

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MacOS Catalina - Won't download from App Store

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