Earlier quoted context omitted.
Not saying that there aren’t issues, but the fact that billions of people use Windows and don’t routinely have their profiles wiped out with every update points to a specific issue with your setup; not a systemic Windows problem.
Oy vey. You're objectively incorrect. It's definitely a Microsoft issue. They use the old OS upgrade procedure to do quarterly updates now which means if it finds a Users directory it will rename it to Users.old and make a new one. However if it does two upgrades in a row in the background without telling you the old Users.old will be deleted from your disk. Now all it would take them is a second to check the sizes o…
Sometimes individual user directories get moved if they are corrupted, but they still aren't in my experience deleted.