Turn off Hierarchical Address Book

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

Registry

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

Value name: disablehab

Enabled: disablehab = 1

Disabled: disablehab = 0

Description

This policy setting turns off the Hierarchical Address Book (HAB). If you enable this policy setting, the HAB will be turned off. If you disable or do not configure this policy setting, the HAB will be displayed.