Thanks a lot, i was in a real panic mode, i doesn't remember about library mainenance


Thanks all


@kovidgoyal can be a Win10 update on background that can create that error?
I've no file sync programs (except Drpopbox that sync file in another HDD and folder), as AV i use Win 10 one and... maybe a firewall? Because mine (Xvirus Personnal Firewalll) sometimes can give problems after a long time usage