Dear Sirs,
Couple of weeks ago I started to have problems with openening of 50% of my word documents which are inside dropbox folder.
Documents are simple not openening, because they have \\?\ symbos at the beginning of file directory

In case I move these not opening files outside Dropbox folder they start to open normally.
Can you please advice why some of my files can have these \\?\ symbols appearing? Same document I'm able to open today can be unable to open next time.
Same happens on my second PC.
Thanks