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MC1184996 — Legacy SharePoint Online Content Delivery Network (CDN) domain to be retired—review configurations

MC1184996SharePoint OnlineplanForChangeUpdated: 8 January 2026

The legacy SharePoint Online CDN domain publiccdn.sharepointonline.com will be retired by late April 2026. Update all hardcoded references to the new domain public-cdn.sharepointonline.com to avoid 404 errors. Validate changes before March 31, 2026, to ensure uninterrupted access to SharePoint resources.

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Applies to: SharePoint Online
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).