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"Security Update 2018-004 El Capitan" just slowed me down noticeably

"Security Update 2018-004 El Capitan" slowed me down noticeably.


Anyone else noticed this? I have multiple backups, thank goodness. How important is this update? I have already read "About the security content of macOS High Sierra 10.13.6, Security Update 2018-004 Sierra, Security Update 2018-004 El Capitan" https://support.apple.com/en-us/HT208937


mid 2012 MacBook Pro, El Cap 10.11.6


Posted on Dec 16, 2019 7:41 AM

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Question marked as Top-ranking reply

Posted on Dec 16, 2019 1:48 PM

Try starting your Mac in Safe Mode, Use safe mode to isolate issues with your Mac – Apple Support

Starting up in Safe Mode takes a while so be patient. Then just restart your Mac up normally.

May make a difference as it clears out caches.

5 replies

"Security Update 2018-004 El Capitan" just slowed me down noticeably

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