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My wife always has the funniest problems with her Mac, while my Mac usually works without a hitch. For me this is very practical because I always have food for my blog, but Ms. Apfelot is rather annoyed about it.
The latest thing at Apfelot was that my wife's iMac suddenly showed the following behavior after a macOS update. After a few minutes of idleness, the iMac should actually go to sleep and ask for the password when it wakes up.
This has been the case for the last few years, until a few days ago, following an update to save energy, he not only switched off the monitor, but also completely logged off the user. In connection with this, all programs were closed and files with unsaved changes were also simply closed.
You can imagine that this is quite annoying: You go for a quick coffee, have a thousand tabs and some unsecured documents open and come back and the Mac just restarts ... Work from the last few hours is partly lost and all because you briefly Has left work.
I couldn't begin with my wife's description of the error, but after a short googling she found out what caused this behavior: an option called "Log off after X minutes of inactivity".
And that's exactly what was obviously activated automatically by the macOS update, because you don't accidentally stumble upon this setting. It is hidden in the following path:
System settings → Security & privacy → More options (bottom right in the window) → "Log out after X minutes of inactivity"
This option was suddenly activated and caused the problems, because instead of at least canceling the logout if there are still unsaved changes to files, these files are simply closed without you having the chance to save them.
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.