Why did my Synology folder disappear from Windows?

Episode 1664 (1:18:21)

Tony from West Palm Beach, FL
Synology DiskStation DS718+

Tony has a Synology NAS, but the public folder disappeared from his Windows PC. And Windows won't let him browse to it. Leo says SMB has to be enabled for the folder to be discovered. It's the networking protocol that Windows uses. It will also give you a password challenge. But once you input the password, Windows should remember it.