Chapter in this post:
Last week, Apple didn't just have that macOS 10.15.7 update for Catalina but also released an update for Mojave, which was named Security Update 2020-005 for macOS Mojave. After the update was released, there were reports of messages in which individual programs were using too much RAM, the CPU was overloaded or the Finder was simply inoperable due to the high location. These phenomena were named in detail:
One trigger - if not the trigger - for the Mac's strange behavior appears to be Safari 14. Obviously, Mojave users who already had the new Safari version on their Mac are particularly affected.
One way to get out of this dilemma is to escape to the front and install macOS Catalina. This solves the problems under Mojave, but for certain reasons many users did not want to update to Catalina. At this point perhaps a brief reference to the article Mojave vs. Big Sur, which is also in the starting blocks.
A second possibility to solve the problem with the miserable performance after the 005 update is to install (without data loss) an older Mojave version that can still be downloaded from Apple. The security update 005 is not yet included here and the problems can be avoided or reversed.
Yesterday Apple itself apparently noticed that the 005 update triggered massive problems for Mojave users and withdrew the update. Instead there is now a new "version" of the update, which is supposed to fix all the problems. According to a reader who wrote to me yesterday and today, any troubles they had after the original update were resolved after the new update.
So if you only start the update now, you shouldn't have any problems with your Mac. All those who are currently still struggling with their Mac should download and install the new security update 005.
Jens has been running the blog since 2012. He appears as Sir Apfelot for his readers and helps them with problems of a technical nature. In his free time he drives electric unicycles, takes photos (preferably with his iPhone, of course), climbs around in the Hessian mountains or hikes with the family. His articles deal with Apple products, news from the world of drones or solutions for current bugs.