Any one of the uBlue projects is perfect for this use case.

KDE: https://getaurora.dev/
Gnome: https://projectbluefin.io/
Gaming: https://bazzite.gg/

Install and setup once, run forever. Immutable so impossible to break for a tech illiterate user, no package upgrades fuck-ups because updates are atomic and don’t touch the currently running system, are done in the background and are completely invisible for the user, great hardware support, based on Fedora. Users can only install Flatpaks through the App Store.

The only “maintenance” needed is a weekly reboot to move to the latest OS image.

As a personal feedback, I moved my gadget enthusiast but tech illiterate father on Bluefin. He can ruin a Mac in less than a few months. He can generate undocumented bugs on iOS by his mere presence. But somehow, Bluefin is still running perfectly after a year. That’s how robust it is.

Just go with Aurora (or Bluefin), that’s the way to go for tech illiterates. Most of these recommendations are 5 years out of date, like why recommend Ubuntu or Zorin, when those are almost the same as Mint.

Debian Stable. Get it installed, get everything working right and configured the way this person likes it on a reasonable DE with default themes, and more likely than not, you won’t have to touch this thing for years.

The setup’s not necessarily for noobs, but if you’re the one doing the setup, you should be able to get it into a place where it will pretty much never break for them.

You should probably give them KDE or GNOME (probably KDE, as it’s more Windows-like and less my way or the highway than Gnome). As much as I love XFCE, it’s probably a good idea to give a layman a feature-heavy DE so that nothing is likely to be missing; also, it’s way too easy to accidentally delete panel items or entire panels on accident and a little annoying to restore things back to the way they were. KDE’s panels implementation mitigates these issues.

Since tech illiterate people don’t really care what’s under the hood as long as it works, I would choose anything with Cinnamon desktop: Gnome is a little alien for newcomers, KDE and XFCE are far too easy to screw up if you don’t know what you’re doing.
If Mint doesn’t work well with you I would suggest either LMDE, stock Debian or the Fedora Cinnamon spin (in this order of priority)

I would go for mint.

I want to suggest something immutable, but even when I use it, I have just had some issues occasionally or when trying to get the one off software here and there.

Of all the people in my family, even elderly, mint has been the easiest transition and I have very rarely needed to perform any additional maintenance outside of doing updates for them here and there.

FWIW, you can install Win11 on unsupported hardware with a pretty easy registry edit to bypass the TPM check. I did it for my mom’s PC that lives 600 miles away from me, thus far with no issues.

If it has to be Linux, I’d recommend something that’s immutable and atomic on a platform you’re familiar with so as to prevent careless mistakes by technophobes.

Ubuntu Core, Fedora Silverblue, MicroOS from openSUSE are all pretty stable and have rollback if something gets borked. Unfortunately, nothing is guaranteed to ‘just work’. Good luck!

Zorin OS

I moved my wife’s laptop to Debian with Cinnamon as a desktop. She loves it and is as technophobic a person as I know…

Auto login, automated-updates set up, remote backups. She just has to open the lid and firefox is there, which is 95% of what she wants. Libre office is around for the remaining 5%.

This is someone who used to get angry at Windows forced updates and reboots, so not having any of that improved her quality of life.

Hannah Montana Linux

Linux Mint

Windows 10 will still be usable after support ends. Security is the only concern, and not that big of one if you regularly back up. It may be a good idea dual boot with Linux on a separate drive while you hammer out the issues with whatever distro.

I personally think anything with plasma 6 will fit for interface coming from windows. Some sort of distro like Ubuntu or Debian that commonly has pre-packages in the wild would make sense.

If Mint is misbehaving that badly on that hardware I’d be far more inclined to blame the hardware. What is it?

People tend to reccomend the only one theyve tried lol, id say de matters more, most distros will just work in my experience, and most of them use guis for grabbing apps with the terminal being optional, Mint is an obvious pick, with cinnamon de being easy to use, prob wouldn’t reccomend gnome with extensions unless you’ve already used linux for a few months, most other des have a solid default experience and easier (more straightforward) customizability

Bazzite Gnome- a hidden gem, as many think Bazzite is just for gaming, but it also has a great desktop mode. Pretty much indestructible (immutable), polished, pretty, has a modern kernel (so good driver support) and has Firefox and Libreoffice installable as Flatpaks. Great for kids and grandmas.

The typical recommendation in this case is Debian.
I don’t know how hard it is to install since I don’t use it myself. There are a lot of people swearing by it’s stability, even running it for 10+ years on the same hardware without a reinstall.