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Security update 2020 for High Sierra

A High Sierra security update (2020) is available for my iMac but will not update as it says you have a security update. Any suggestions how to break this circular problem.

Posted on Jul 4, 2020 6:33 AM

Top-ranking reply

BDAqua

Level 10

245,393 points

Posted on Jul 4, 2020 11:20 AM

Hi John,

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

Try downloading the stand alone & installing while in Safe Mode..

https://support.apple.com/kb/DL2041?locale=en_US

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Security update 2020 for High Sierra

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