While ‘ we know it’s a great idea to download and install security updates, sometimes, just like any software release, a security update has issues. This is the case with the macOS Mojave Security Update that was released on September 24. It caused so many issues that Apple pulled, then replaced it with the Mojave Supplemental Update fix one day later.
Mojave Security Update
If you never upgraded to macOS Catalina, are still using macOS Mojave, and installed the Mojave Security Update sometime in the last few weeks, you may be experiencing issues.
Users have reported memory issues, slow boot times, Finder stalling, multiple system.log entries, Migration Assistant crashes, and more. The complaints have existed since it was released, yet it wasn’t pulled until September 30.
Possible fixes include reverting to a Time Machine backup, reinstalling Mojave, or upgrading to macOS Catalina.
Mojave Supplemental Update
Instead of those previously-mentioned fixes, you can also install the macOS Mojave 10.14.6 Supplemental Update that was released one day after Apple took down the Mojave update that was causing all the issues.
Apple says the update resolves app performance issues, a Migration Assistant stability issue, and an issue that may prevent you from creating a user account. Note that this update requires a restart of your Mac, while normal Safari updates do not. Don’t be alarmed — that’s supposed to happen.
The newest update will fix the account creation issues, Migration Assistant crashing, software update errors, Time Machine local snapshot errors, and memory issues.
Along with the fix, Apple also re-released the Mojave Security Update after initially pulling it. This makes it difficult to determine what you need.
If you only installed Safari 14.0, version 14610.1.28.1.9, you’ll be offered Security Update 2020-005 10.14.6. It will install a corrected version of the Safari Supplemental Update and the re-released version of the Mojave Security Update. Reboot and you’ll be updated.
If you only installed the Mojave Security Update, you will be offered macOS Supplemental Update 10.14.6. Just install that, and you’re done.
Were you all in with the update and installed both Safari 14.0 and Mohave Security Update 2020-005? You’ll be offered macOS Supplemental Update 10.14.6. It will install a corrected version of Safari Supplemental Update. After a reboot, you’ll be up to date.
Perhaps you’re one of those who puts off doing updates. You’ll be offered Security Update 2020-005 10.14.6 when you try to update. It will install a corrected version of Safari Supplemental Update and the re-released version of Mojave Security Update. After a reboot, you’ll be set.
If you’re over macOS, read on to learn how to make Ubuntu look like macOS Mojave 10.14.
Image Credit: Apple Newsroom, macOS Mojave and public domain