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MC1194615 — Microsoft Excel: Enabling M365 subscribers to use Copilot Chat in locally stored modern workbooks

MC1194615Microsoft 365 apps · Microsoft 365 Copilot ChatstayInformedUpdated: 12 December 2025

Microsoft 365 subscribers will be able to use Copilot Chat in locally stored Excel modern workbooks starting mid-December 2025, with rollout completing by January 2026. This feature is enabled by default and aligns functionality with workbooks stored in SharePoint or OneDrive.

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Applies to: Microsoft 365 apps · Microsoft 365 Copilot Chat
Source: mc.merill.net — data via Merill Fernando's open archive (MIT).