SharePoint: Improved site metadata size reporting

SharePoint will improve site metadata size reporting by including document library field data, providing a more complete usage view. The 1 TB metadata limit remains, but reported sizes may increase, potentially blocking new metadata additions if exceeded. Rollout starts October 20, 2026, with no content changes. What and Why: Microsoft is improving how site metadata size is reported in SharePoint. The calculation will include document library field data, giving admins a more complete view of a site’s metadata usage. Nothing about your content changes. No content is added, moved, or removed, and the site metadata size limit remains 1 TB per site. Because the calculation is more complete, reported metadata size may be higher for some sites. For most sites, the difference will be small and nothing else will change. Some sites may show a size at or above the 1 TB limit once the updated calculation is applied. Rollout Schedule: General Availability, Worldwide: We will begin rolling out on October 20, 2026. Sites already identified as expected to reach or exceed the 1 TB metadata limit will be excluded from the initial rollout to provide additional time to reduce their metadata usage before the correction is applied. Impact on Your Organization: Who is affected: SharePoint admins who monitor site storage and metadata usage. Organizations with SharePoint sites that are close to or above the 1 TB site metadata limit. Site owners and users of sites that receive metadata warnings or enforcement messages. Platforms/Services: SharePoint Online. SharePoint Storage Metrics. SharePoint document libraries and lists. What will happen: Most organizations will see no change in behavior. The visible difference is that reported site metadata size may be higher than before because document library field data is included in the calculation. For sites that cross the 1 TB metadata limit after the correction, the site is blocked from adding new metadata until usage is brought back under the limit. Existing content stays in place and remains accessible. SharePoint shows a warning or error message when the site is close to, or has reached, the metadata limit. For sites that reach 80% of […]

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