Outlook Protection Rules
Supported on: At least Windows Server 2008 R2 or Windows 7
Registry
HKCU
software\policies\microsoft\office\outlook\addins\umoutlookaddin.formregionaddin Value name: pb4sdisabled
Enabled: pb4sdisabled = 0
Disabled: pb4sdisabled = 1
Description
This policy setting controls whether the Outlook Protection Rules add-in is enabled. If you enable or do not configure this policy setting the add-in automatically downloads Outlook Protection Rules from Exchange and processes them when each Exchange mailbox user composes a new e-mail. If you disable this policy setting the add-in does not download or process Outlook Protection Rules.