Disallow Download Headers

Supported on: At least Windows Server 2008 R2 or Windows 7

Registry

HKCU software\policies\microsoft\office\16.0\outlook\cached mode

Value name: noheaders

Enabled: noheaders = 1

Disabled: noheaders = 0

Disables/Enables the option "Download Headers" in the Server group of the Send/Receive tab.