After Microsoft stopped providing free support for its most popular operating system (Windows 7), many (including myself) switched to Windows 10. For me personally it was not some kind of painful experience, more or less I am satisfied with how everything works. But it seems that Microsoft is doing a really bad job with its updates, which create big problems for their users.
One of the rather annoying problems is that the update deletes all your data from your computer, which just happened to some users. This is especially tricky if you have crypto wallet and backup stored on your computer that just happened to one user few days ago. Windows 10 update is delete his Electrum and seed is also saved on desktop (so stupid move). Read more here :
Microsoft update deleted Electrum.
What actually happens is that after the update, Windows should return to main profile, but for some reason it stuck in temporary profile that is created during the update. What should remedy the situation is explained on Microsoft support page :
The solution to this problem is usually very simple - restart (not shut down) you PC 4 times in a row, each time let Windows get to the Desktop, before the next restart. The logic behind this fix is, it prompts Windows to complete the update and restore the original user profile, complete with files and applications
Of course, this solution does not work for everyone, and some are still struggling to recover their files. So be careful with the Windows update, check whether other users have some problems, and backup all important files on external disk/usb stick.