Work across M365 apps changedoffice-agents/work-across-apps
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Upstream edited this page at 30 Oct 2026 23:03 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 30 Oct 2026 23:07 UTC.
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33> Let Claude read from one Microsoft 365 app and make changes in another in a single conversation.
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5> [!WARNING]
6>
7> After the September and October 2026 Microsoft 365 updates for Windows, the
8> Claude add-in can open on new, empty storage, so earlier chat history and
9> uploaded skills stop appearing. They are still on the device, so don't clear
10> the Office add-in cache, which deletes them. Anthropic is working with
11> Microsoft on this. In the meantime, see
12> [Chat history and skills missing after a Microsoft 365 update on Windows](https://claude.com/docs/office-agents/data-storage.md#chat-history-and-skills-missing-after-a-microsoft-365-update-on-windows)
13> for what you and your IT team can do.
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515Claude can coordinate between the Excel, PowerPoint, Word, and Outlook
616add-ins in your Microsoft 365 suite. Instead of switching between apps
717and re-providing context each time, Claude can read from one app and
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