Configure Outlook object model prompt when responding to meeting and task requests

This policy setting controls what happens when an untrusted program attempts to programmatically send e-mail in Outlook 2007 using the Response method of a task or meeting request.

If you enable this policy setting, you can choose from four different options when an untrusted program attempts to programmatically send e-mail using the Response method of a task or meeting request:

- Prompt user. The user will be prompted to approve every access attempt.

- Automatically approve. Outlook will automatically grant programmatic access requests from any program. This option can create a significant vulnerability, and is not recommended.

- Automatically deny. Outlook will automatically deny programmatic access requests from any program.

- Prompt user based on computer security. Outlook only prompts users when antivirus software is out of date or not running. This is the default configuration.

If you disable or do not configure this policy setting, when an untrusted application attempts to respond to tasks or meeting requests programmatically, Outlook 2007 relies on the setting configured in the "Programmatic Access" section of the Trust Center. This setting determines whether Outlook will warn users about programmatic access attempts:

- Only when antivirus software is out of date or not running (the default setting)

- Every time

- Not at all. If the "Not at all" option is selected, Outlook will silently grant programmatic access to any program that requests it.

Note - This described default functionality assumes that you have not followed the recommendation to enable the "Outlook Security Mode" Group Policy setting to ensure that Outlook security settings are configured by Group Policy. If Group Policy security settings are used for Outlook, the "Programmatic Access" section of the Trust Center is not used. In this situation, the default is to prompt users based on computer security, which is the equivalent of the "Only when antivirus software is out of date or not running" option in the Trust Center, and the user experience is not affected.

Important - For this policy setting to apply, you must also enable the "Outlook Security Mode" setting in User Configuration\Administrative Templates\Classic Administrative Templates (ADM)\Microsoft Office Outlook 2007\Security\Security Form Settings\Microsoft Office Outlook 2007 Security and select "Use Outlook Security Group Policy" from the drop-down list.

For more information about the Object Model Guard, see Security Behavior of the Outlook (http://r.office.microsoft.com/r/rlidGPSecBehaviorOutlookModel?clid=en-us) in the MSDN Outlook Developer Reference.

Supported on: At least Windows Vista
Guard behavior:


  1. Prompt User
    Registry HiveHKEY_CURRENT_USER
    Registry PathSoftware\Policies\Microsoft\Office\12.0\Outlook\Security
    Value NamePromptOOMMeetingTaskRequestResponse
    Value TypeREG_DWORD
    Value1
  2. Automatically Approve
    Registry HiveHKEY_CURRENT_USER
    Registry PathSoftware\Policies\Microsoft\Office\12.0\Outlook\Security
    Value NamePromptOOMMeetingTaskRequestResponse
    Value TypeREG_DWORD
    Value2
  3. Automatically Deny
    Registry HiveHKEY_CURRENT_USER
    Registry PathSoftware\Policies\Microsoft\Office\12.0\Outlook\Security
    Value NamePromptOOMMeetingTaskRequestResponse
    Value TypeREG_DWORD
    Value0
  4. Prompt user based on computer security
    Registry HiveHKEY_CURRENT_USER
    Registry PathSoftware\Policies\Microsoft\Office\12.0\Outlook\Security
    Value NamePromptOOMMeetingTaskRequestResponse
    Value TypeREG_DWORD
    Value3


outlk12.admx

Administrative Templates (Computers)

Administrative Templates (Users)