My Windows 10 mail app cannot sync email from my Gmail or Yahoo email addresses unless I turn off my Bitdefender firewall. It's easy to add exceptions to the firewall in Bitdefender (just as it is in Windows Defender), but in order to do that I need to point out specific programs to green-light.
Where are Windows 10 apps located? What files do I need to grant exceptions to in order to get the Win 10 mail app successfully exempted? I think I found them in [user]/appdata/Local/packages, but I don't know which files to grant exceptions to.