Microsoft Outlook: Disable add-in user reporting buttons now that built-in Report button is GA for all platforms

As communicated in four previously published posts for Microsoft Defender and Microsoft Exchange Online starting in 2022 and ending with MC960818 (Updated) Microsoft Outlook for iOS/Android: New reporting buttons integrated with Microsoft Defender for Office 365 (February 2024), the built-in Report button is available for all Microsoft Outlook platforms. Learn more: Report phishing and suspicious emails in Outlook for admins - Microsoft Defender for Office 365 | Microsoft Learn.

This message announces the maintenance mode status of the Report Message add-in and Report Phishing add-in and explains how to disable all add-ins so users only see one reporting option in Outlook.

This message applies to new Outlook for Windows desktop, Outlook for Mac desktop, Outlook for the web, and Outlook for iOS/Android.

When this will happen:

General Availability (Worldwide, GCC, GCC High, DoD): Available now.

How this will affect your organization:

Before this change: The Report Message add-in and Report Phishing add-in were available for Outlook.

After this change, the built-in Report button provides these advantages over the add-ins:

The Report Message add-in and Report Phishing add-in are now in maintenance mode, which means we will not make improvements to them. The add-ins will remain functional until we eventually retire them. Any new improvement requests for the add-ins will be rejected. Learn more: Transition from Report Message or the Report Phishing add-ins - Microsoft Defender for Office 365 | Microsoft Learn (includes Frequently Asked Questions).

If you have the Report Message add-in and Report Phishing add-in, users will see two reporting options in Outlook: The Report Message add-in and the built-in Report button. It is not possible to remove the built-in Report button and keep the Report Message add-in. Learn more about removing the add-in.

If you are using a third-party add-in, end users might see two reporting options in Outlook. Follow these steps to remove the in-built report button:

1. Go to Microsoft Defender > User reported settings
2. Select Monitor reported messages in Outlook.
3. Select Use a non-Microsoft add-in button.
4. In the Reported message destination section, configure these options:
   1. For Send reported messages to:, select one of these values:
      • My reporting mailbox only
      • Microsoft and My reporting mailbox
   2. For Add an Exchange Online mailbox to send reported messages to:, specify an existing internal reporting mailbox to hold user reported messages from the third-party add-in.

What you need to do to prepare:

Review your current configuration to determine the impact for your organization. You may want to notify your users about this change and update any relevant training materials.

Learn more

• Transition from Report Message or the Report Phishing add-ins - Microsoft Defender for Office 365 | Microsoft Learn
• Report phishing and suspicious emails in Outlook for admins - Microsoft Defender for Office 365 | Microsoft Learn
• User reported settings - Microsoft Defender for Office 365 | Microsoft Learn

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