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Office Settings & Configuration

How to Troubleshoot Missing Report Phish Add-in in Outlook

Kushani NimanthikaKushani Nimanthika Sep 30, 2026 869 views

Question details

Some users are unable to see the Report Phish or Security Action add-ins in Outlook after they have been deployed through a Proofpoint manifest link.

How to Troubleshoot Missing Report Phish and Security Action Add-ins in Outlook
Product
Microsoft Outlook
Device & OS
not provided
Scenario
Administrators deploying custom enterprise security add-ins to users via the Microsoft 365 portal.
Observed behavior
The deployed add-ins do not appear in the Outlook client interface for certain users despite a seemingly successful deployment.
Before you start

Ensure you have Microsoft 365 or Exchange administrative privileges to review deployment settings and verify that your users are running a supported version of the Outlook desktop or web client.

Solution 1Recommended

Verify Deployment Configuration in Microsoft 365 Portal

Ensure the deployment steps were correctly executed and assigned to the right users.

1
Access Integrated Apps

Open the Microsoft 365 Admin portal or Exchange server and navigate to Settings, then click on Integrated Apps.

2
Upload Custom Apps

Choose the option to Upload custom apps and provide the required Proofpoint manifest link.

3
Validate and Deploy

Validate the manifest link, select the specific users or groups who should receive the add-in, and complete the deployment process.

Verify Deployment Configuration in Microsoft 365 Portal
Propagation Time: Allow sufficient time for the deployment to propagate across all user clients, which can take up to 24 hours.
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Frequently Asked Questions

How long does it take for a newly deployed Outlook add-in to appear?

It can take up to 24 hours for a newly deployed add-in to fully propagate through the Microsoft 365 system and appear in all targeted users' Outlook clients.

Why are some users missing the Report Phish add-in while others have it?

This discrepancy is usually caused by users having different versions of the Outlook desktop client, lacking the required Microsoft 365 licenses, or being subjected to restrictive network conditional-access policies.

What should I do if the add-ins are still missing after 24 hours?

If you have verified the deployment configuration, licensing, and client compatibility but the add-ins remain unavailable, it is recommended to contact Microsoft or Proofpoint Support for advanced assistance.