Ms-ad folder

Hello,
You can check here if needed:
https://forums.commentcamarche.net/forum/affich-37628676-dossier-apparu-ms-ad
Have you changed the display of system folders?
Have you right-clicked on this folder and then selected "Properties" to try to find out more about the origin of this file?

Hello and thank you MPMP10
Indeed, the cause is Acrobat Reader, the strange thing about the ""thing"" is that I only use it once in a while.
But very rarely!!!
I uninstalled it, now Chrome reads it for me and it's much better!
As for me, I don't use PDFs, only to read them.
I downloaded Sumatra without installing it since everything is fine for now, if the ms-ad folder doesn't disappear, I'll make it ""invisible""
Thanks for everything.
Solved.