I have upgraded to 24H2 on both PC's, and since I upgraded, they no longer work together on a home network. I upgraded the first PC from 23H2 to 24H2 a year or more ago because 23H2 kept installing a feature upgrade that caused my PC to lose the desktop, and it would go black, and the toolbar would go black as well. After about 6 months of hoping Microsoft would fix the issue, I finally decided I would upgrade to 24H2 on my first PC> I had no reason to upgrade the second PC to 24H2 at that time because the features upgrade didn't seem to affect the second PC. Only the first PC, and that is the PC I use all the time. The second PC basically acts as a backup for my first PC when Microsoft decides to develop something that breaks my first PC, like a black desktop and taskbar. Even though I would remove the features upgrade and hide the patch that kept breaking my first PC, I stuck with 23H2 because upgrading seems to always break something, even though it is not supposed to. After a year of going through the same thing every few weeks of removing the features upgrade and hiding the feature so my PC would not find it and somehow a few weeks later it would find it again and again and again until I finally came to realization it was never going to be fixed so I upgraded to 24H2 on my first PC. To my surprise, the upgrade to 24H2 went perfectly. Probably the first time I have ever had an upgrade go so smoothly without even the slightest issue. I was thinking I should have done this a year or two ago, it was so easy and worked so well. Everything was going well, and I still had everything working on my second PC, so there was no need to rush and upgrade it. I worked for probably a year with one PC, "My main PC' on 24H2, and the second PC, "The PC I keep drives connected to and also use as a backup in case My first PC fails to work for some reason. "Like installing a feature update that causes my desktop and taskbar to go black. So, about a year or two later, when the second "backup PC" had the same bug in the features update, hit it, and my second PC's desktop and taskbar went black I now knew how to recover it pretty rapidly did so for several months hoping again that more time had past and maybe Microsoft was going to develop a fix for this if I just hang in a little longer. I still was not too keen on upgrading because I might have gotten lucky with my first PC, so every few weeks, I would have a black desktop and taskbar. Every few weeks, I would uninstall the feature update that caused the screen to go black. And every few weeks, I would hide the patch so my PC wouldn't see it, so it wouldn't install it. And rinse and repeat. After months of doing this, and during all that time, my Main PC was working so well on 24H2. But remember, I have always had issues upgrading, but the last time it went like butter. Smooth as can be. But after a time, it wore me down and I finally, after about 6 months or so of doing the rinse and repeat to remove a patch, that caused my desktop and taskbar to go black and this occurred about a year after it after I upgraded my first PC to 24H2 because I had been going through the same problem that has now hit my second PC a year or so after I fixed the very same issue on my first PC by upgrading to 24H2 with probably the easiest upgrade I ever experienced against my better judgment I finally decided to Upgrade my second PC to 24H2 and have regretted my decision over and over since then. I had a fix for 23H2 that worked, and even though it had to be done over and over, it still worked. Besides, if worse came to worst, I could always roll back to 23H2 no problem, right? So I upgraded, and as soon as I did, the upgrade went fine and was just as easy. But now my second PC shows offline. But hey, I could still roll back at any time. So I was trying to get my second PC to show up on my network so I could remote into it and share files and keep USB drives connected to it to keep TV series I like to watch stored on the USB drives attached to my second PC. So after about 6 months of trying to fix why I couldn't see my second PC on my network, and couldn't use the remote function to log into it because it no longer showed up on my network. I gave up trying to fix this, and guess what? I had just spent 6 months or so trying to fix something in 24H2 that should have never been broken in the first place I finally gave p and decided I am going to have to roll bit back to 23H2 because I don't like dealing with having to uninstall a feature every week or so to get my desktop and taskbar back but that fix I know how to do. How to get my PC to see each other now that is something I haven't been able to do. So I went to roll it back. It failed I tried again it failed again. I had been trying to make my PC work for 6 or so months and they failed so I decided to roll it back to 23H2 and guess what that is only an option for about 6 minutes. Well 10 days really but I tried a lot longer than 10 days trying to make it work and now there is no way to roll it back. So I have 2 PC's on 24H2 that don't see each other. So 24H2 security is great. It is so great that the PC's don't work any longer. They are real secure now because I can't even get access from one PC in my house to another PC in my house. But bot are on the internet. So My house is more of a security risk than the internet because in my house the PC can't see the other PC that is in a different room and yet someone on the internet would see both of them.