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MC1420894 — Microsoft 365 Copilot Notebooks: Support for TXT and RTF files as notebook references

MC1420894Microsoft 365 appsstayInformedUpdated: 8 July 2026

Microsoft 365 Copilot Notebooks will support TXT and RTF files as reference sources starting early July 2026, enabling users to include more text-based content for AI analysis and insights. This enhancement requires no action, maintains existing security policies, and expands Copilot’s data processing capabilities.

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