I did not experience this. It sounds like malware has struck.

Can you duplicate the message? If yes, film it. Ask Microsoft sending them the footage.

Take the harddrive out of that computer, put it in an external casing and copy the requested files using another computer.


From my best practices collection:
I did a full backup before going to Windows 10,
I did a full backup after I went to Windows 10.

This way I'm sure I can access all necessary files.


Desktop; i7-2600k, 8 GB mem., Win 10 Pro, BIAB 2017; RB 2017 - latest build
Laptop: i5-2410M, 4 GB mem, Win 10 Pro, BIAB 2017; RB 2017 - latest build