Windows 10 Problem with File History

[mike21]

I am having trouble using file history. If I accept the defaults by just pressing Backup Now the result is just an empty 2Mb file. If I add Documents and Desktop the result is still just an empty 2Mb file. What I wish is to do is a file backup followed by daily incremental backups of the Documents/Documents folder and desktop. I make an image every week, but want to be able to restore files that have changed or are new since the image was made if there is a major computer problem – is that possible and if so how do I do it.