[dayglored]

>> As I understood disabling TCP/IP v6 causes the problem?

> Interesting, I haven't seen that yet. Gotta link?

Found one on BetaNews, but it's not the file-deletion problem, it's a network connection issue:

Windows 10 October 2018 Update breaks Microsoft Edge and Windows Store apps for some users

"Microsoft is aware of an issue after installing the Windows 10 October 2018 Update (version 1809) that prevents Microsoft Store apps from connecting to the Internet on devices that have disabled IPv6."

Although the company is working on a proper solution, for now you can get around the issue by simply enabling IPv6.

They also have a mention that the missing files are deleted, but not overwritten (unless you've been using the computer since the update), so a deleted-file recovery tool might be able to get them back, assuming you don't install the tool on the same disk, of course... yikes.

[ImJustAnotherOkie]

And Onedrive is a network connection issue. Onedrive seems to be the culprit in this.

I’ve paused my updates for the time being.