Configure Simple MAPI message opening prompt

This policy setting allows you to specify what occurs when a program attempts to gain access to a recipient field, such as the "To" field, using Simple MAPI.

If you enable this policy setting, you can choose whether Outlook always allows access to the recipient field, always disallows access to the recipient field, or prompt users to specify whether to allow or disallow access to the recipient field.

If you disable or do not configure this policy setting, Outlook prompts users to specify whether to allow or disallow access to the Address Book.

Supported on: At least Windows 7
Guard behavior:


  1. Prompt User
    Registry HiveHKEY_CURRENT_USER
    Registry Pathsoftware\policies\microsoft\office\16.0\outlook\security
    Value Namepromptsimplemapiopenmessage
    Value TypeREG_DWORD
    Value1
  2. Automatically Approve
    Registry HiveHKEY_CURRENT_USER
    Registry Pathsoftware\policies\microsoft\office\16.0\outlook\security
    Value Namepromptsimplemapiopenmessage
    Value TypeREG_DWORD
    Value2
  3. Automatically Deny
    Registry HiveHKEY_CURRENT_USER
    Registry Pathsoftware\policies\microsoft\office\16.0\outlook\security
    Value Namepromptsimplemapiopenmessage
    Value TypeREG_DWORD
    Value0


outlk16.admx

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