10.15.5 Supplemental Update Won't Install

So, I've got a strange one. Currently on Catalina 10.15.5 on a 2020 MacBook Air. Software Update shows a "10.15.5 Supplemental Update" available, but when I go to update the update fails. When I start it in Safe Mode, there's no update available. What gives?

MacBook Air

Posted on Jun 6, 2020 07:43 PM

Top-ranking reply

Prabjots07

Level 3

498 points

Posted on Jun 7, 2020 03:02 AM

Try downloading from this link https://support.apple.com/kb/DL2039 and installing manually.

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Top-ranking reply

Prabjots07

Level 3

498 points

Jun 7, 2020 03:02 AM in response to curtissh

Try downloading from this link https://support.apple.com/kb/DL2039 and installing manually.

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10.15.5 Supplemental Update Won't Install

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