When setting up new POP account on Outlook 2016, testing it makes sending and receiving shows the error 0x80004005.
Computer is joined to a local domain, and email being setup is a POP account provided by a different mail hosting server.

Solution: On HKEY_LOCAL_MACHINE\Software\Microsoft\Cryptography\Protect\Providers\df9d8cd0-1501-11d1-8c7a-00c04fc297eb,

create or set a new registry DWORD value, named ProtectionPolicy, set the value 1

Disabling notification (receiving email) didn't work.