Use the Online Global Address List for Nickname Resolution

Policy ID: L_IncludeOnlineModeGALinANR
Scope: User Configuration
Supported on: At least Windows Server 2008 R2 or Windows 7
Source: Microsoft 365 Apps / Office Administrative Templates (version 5568.1000)
Category: Microsoft Outlook 2016 › Account Settings › Exchange › Cached Exchange Mode

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.

Registry

UserHKEY_CURRENT_USER

HKCU\software\policies\microsoft\office\16.0\outlook\cached mode View registry values

anr include online galREG_DWORD

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