Security Policy Errors

How to Renew an Expiring SharePoint Add-In Client Secret

Maira Mehtab Sep 28, 2026 869 views

Question details

The user needs to know how to renew a client secret for a SharePoint Add-In before its expiration date to maintain add-in connectivity.

Product: Microsoft SharePoint
Device & OS: not provided
Scenario: Maintaining an existing SharePoint Add-In by updating its security credentials.
Observed behavior: The client secret is approaching expiration and requires renewal to ensure uninterrupted functionality for the SharePoint Add-In.

Before you start

Ensure you have administrator or appropriate developer access to your SharePoint environment and the portal where the add-in is registered.

Solution 1Recommended

Follow Microsoft's Documented Renewal Procedure

Use the official Microsoft procedure to replace your expiring client secret before the expiration date to maintain add-in connectivity.

Microsoft provides detailed official guidance for renewing an expiring SharePoint Add-in secret. Note that while SharePoint Add-ins are supported until April 2, 2026, the feature is considered legacy and is not receiving new feature investments.

Access the Admin Portal

Log into the Microsoft 365 or Azure Admin portal where your SharePoint add-in client secret is currently managed.

Locate Your Add-in

Navigate to the registered applications or app catalog and select the specific SharePoint add-in that has an expiring client secret.

Generate a Replacement Secret

Follow the steps outlined in Microsoft's official documentation to generate a new client secret.

Update Add-in Configuration

Apply the newly generated secret to your add-in configuration and deploy the changes before the old secret expires.

Developer Community Support: For customized development issues or advanced configurations, consider posting your questions in the Microsoft SharePoint Developer Community.

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Frequently Asked Questions

When does support for SharePoint Add-ins end?

Microsoft supports SharePoint Add-ins until April 2, 2026. However, the feature is considered legacy and is not receiving any new investments or updates.

Can I replace a SharePoint Add-in client secret before it actually expires?

Yes, it is highly recommended to replace the client secret before the expiration date to avoid any downtime or disruption to your SharePoint Add-in services.

Where can I get help for complex custom SharePoint Add-in development?

If you have customized development questions or run into complex issues during the renewal process, the best resource is the official Microsoft SharePoint Developer Community forums.

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