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MC1168289 — Microsoft 365 apps: Custom Engine Agents now available in Word, Excel, PowerPoint, and OneNote

MC1168289Microsoft 365 appsstayInformedUpdated: 8 October 2025

Custom Engine Agents (CEAs) are now available in Word, Excel, PowerPoint, and OneNote, expanding Microsoft 365 Copilot extensibility. CEAs run on partner services, appear in the Copilot pane, and allow users to generate and insert content. Full rollout is expected by October 13, 2025, with no admin action required.

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