MC1186368 | Microsoft SharePoint: Update to custom scripting governance in App Catalog site

Service

SharePoint Online

Last Updated

2025-11-15T00:00:07.4Z

Published

2025-11-14T23:59:31Z

Message ID

MC1186368

To strengthen security and reduce the risk of ungoverned scripting, Microsoft is expanding the custom scripting governance in the App Catalog site. This change helps ensure a more secure and manageable environment in SharePoint Online. What will happen: Custom scripting will be disabled (setting DenyAddAndCustomizePages to 1 or $true) for the tenant-wide App Catalog site using the APPCATALOG#0 template. When this will happen: Default custom scripting governance on the App Catalog site will take effect starting in mid-January 2026. Who is affected: Admins managing the SharePoint tenant-wide App Catalog site and content inside. How this affects your organization: • App operations remain unaffe...

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