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# France's École Polytechnique suspends its migration to Microsoft 365
- URL: https://sovereigntymonitor.eu/news/2025-10-13-polytechnique-suspends-microsoft-365-migration/
- Published: 2025-10-13T12:00:00.000Z
- Updated: 2026-10-13T12:01:01.000Z
- Description: Facing a legal challenge from open source body CNLL and staff opposition, France's École Polytechnique suspended its planned migration of sensitive research data to Microsoft 365, reported from 14 October 2025.
- Author: Reidar Balstad
- Tags: Compute and infrastructure, #news, #reported, #editor-read

Reported Editor-read [Mac4Ever, 14 October 2025](https://www.mac4ever.com/societe/192415-polytechnique-dit-definitivement-non-a-microsoft-365-pourquoi-c-est-important?ref=sovereigntymonitor.eu)

**What it does not test.** It does not establish a permanent cancellation or name a replacement platform, only a suspension under pressure.

**How this item counts.** This item is dated before the index starts on 1 January 2026, so it does not count in the [European Sovereignty Index](https://sovereigntymonitor.eu/sovereignty-index/).

**How this item was made.** Drafted by an AI system (Claude (Anthropic)) from the source cited above; read and approved by the editor on 2026-10-13\. [How the record is made](https://sovereigntymonitor.eu/method/#how-the-record-is-made)