Use the Online Global Address List for Nickname Resolution

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

Registry

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

Value name: anr include online gal

Enabled: anr include online gal = 1

Disabled: anr include online gal = 0

Description

This policy setting allows you to force Outlook to use the Online Global Address List for ambiguous name resolution when composing messages in Outlook, instead of using the Offline Address Book when it is available. If you enable this policy setting, addresses are resolved using the Online Global Address List, which may contain additional information (that the Offline Address Book would not have) that allows an address to be resolved. If you disable or do not configure this policy setting, Outlook resolves addresses using the Offline Address Book when it is available.