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MC1188595: App-only certificate-based authentication now available in SharePoint Online Management Shell

Summary:
SharePoint Online Management Shell now supports App-Only Certificate-Based Authentication for secure automation.
This allows scripts to authenticate using app identities in Microsoft Entra ID, facilitating unattended execution even with MFA enabled.
SharePoint administrators and automation engineers are directly affected, as this change impacts scripting and automation processes.
A set of one-time steps is required to register the app, assign API permissions, and attach a certificate to enable this authentication method.
No compliance considerations have been identified related to this change.

Admin Impact
Medium
User Impact
Low
Release Start
21 Nov 2025
Release End
21 Nov 2025
Services
SharePoint
Category: Stay informed
Tags
Feature Update
Admin Action

History

11/21/2025 Item Added to Message Center

Microsoft Message

Introduction
We are pleased to announce that SharePoint Online Management Shell now supports App-Only Certificate-Based Authentication. This update addresses the business need for secure, unattended automation in environments where (for example) Multi-Factor Authentication (MFA) is enforced. With this enhancement, customers can run automation scripts using app identities, ensuring compliance with security policies while maintaining operational efficiency.

When this will happen:
This feature is now generally available.

How this affects your organization:
Who is affected: SharePoint administrators and automation engineers using SharePoint Online Management Shell for scripting and automation.

What will happen:

Customers can now authenticate scripts using app identities registered in Microsoft Entra ID (formerly Azure AD), instead of user credentials.
This enables seamless execution of unattended scripts, even when MFA is enforced.
We expect most scenarios to work with App-Only authentication. However, there could be rare cases where an API needs an explicit user token for security reasons. In such cases, tenant admins should use interactive flows with admin/user credentials. Feel free to reach out to us if needed.

What you can do to prepare:
Follow these one-time steps to register your app and enable certificate-based authentication:

Step 1: Register the application in Microsoft Entra ID.
Step 2: Assign API permissions to the application:
Tenant Admin APIs currently support App-Only access only if they have the Sites.FullControl scope.
We are in the process of supporting more granular scopes for tenant APIs. For up-to-date information, refer to SharePoint Admin APIs Authentication and Authorization.
You can assign permissions by:
Selecting and assigning API permissions from the portal.
Modifying the app manifest to assign API permissions (required for Microsoft 365 GCC High and DoD organizations).
Learn more: Step 2: Assign API permissions to the application
Step 3: Generate a self-signed certificate or obtain one from a certificate authority.
Step 4: Attach the certificate to the Microsoft Entra application.
Once these steps are completed, update the Connect-SPOService line at the beginning of your scripts to use the app identity instead of user credentials. For examples, refer examples 7, 8, and 9 in this article: Connect-SPOService (Microsoft.Online.SharePoint.PowerShell).

Compliance considerations:
No compliance considerations identified, review as appropriate for your organization.

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