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macOS Catalina 10.15.6, Security Update 2020-004 Mojave, Security Update 2020-004 High Sierra

I had Trouble restarting. I had to quit the update.

MacBook Pro 13″, macOS 10.13

Posted on Jul 29, 2020 12:01 PM

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Question marked as Top-ranking reply

Posted on Jul 29, 2020 2:54 PM

Several have, no one single cause or cure, did you try the standalone & installing it in Safe Mode?


https://support.apple.com/kb/DL2046?locale=en_US


Safe Boot, (holding Shift key down at startup), does the problem occur in Safe Mode?

6 replies

Jul 29, 2020 1:57 PM in response to BDAqua

No I'm not.


When restarting after installation I got the following message

"Macos could not be installed in your computer. An error occured installing macos. To use apple diagnostics to check mac hardware, shut down, press the power button and immediately hold the D key until diagnostics begins. Quit the installer to restart your computer and try again."


I did the latter but I have not tried again yet. I was wondering if anyone had this issue before.


macOS Catalina 10.15.6, Security Update 2020-004 Mojave, Security Update 2020-004 High Sierra

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