macOS Catalina 10.15.4 update will not install

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macOS Catalina 10.15.4 update will not install

I have downloaded the latest update to go from 10.15.3 to 10.15.4. It downloaded as normal and then offered to 'Install Now' with computer restart. The restart involved the progress bar under the Apple logo, as expected (although probably too quick for an update). After the mac restarted, I log in only to find that the update has not installed and I am still on 10.15.3.

Anyone have any ideas or know where I could start with troubleshooting?

MacBook Air 13", macOS 10.15

Posted on Mar 31, 2020 7:41 PM

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Answer 1

Best reply

Ferd II

Level 10

104,263 points

Mar 31, 2020 7:45 PM in response to thayn7

I would try to Download/Install macOS Catalina 10.15.4 Combo Update.

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Answer 2

Rysz

Level 8

44,391 points

Mar 31, 2020 7:46 PM in response to thayn7

The Catalina Installer app should have saved to the Applications folder. You can try launching it again, but my suggestion would be to Trash it (in case it’s corrupted), then download a fresh copy from the App Store (search for “Catalina”). This way you will download a combo (complete) package installer.

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Answer 3

thayn7 Author

Level 1

10 points

Mar 31, 2020 8:32 PM in response to Rysz

I have found the update pkg files in \Libraries\Updates but I do not have permission to delete them(my MacBook, I am the only user and should be Admin).

In the meantime, I am downloading the combo update to see if that will work.

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Answer 4

thayn7 Author

Level 1

10 points

Mar 31, 2020 11:32 PM in response to Ferd II

Thanks for the suggestions. Turns out I dropped the ball on storage and only had 5GB left... I didn't receive that notification, though, until trying to run the combo update file. All sorted now.

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Answer 5

Ferd II

Level 10

104,263 points

Apr 1, 2020 6:29 AM in response to thayn7

You are welcome.

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macOS Catalina 10.15.4 update will not install

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