France’s sovereign cloud stalls on Microsoft desktop habits

France’s ambitious drive for digital sovereignty is running into a familiar obstacle: user habits. At Nextcloud’s annual summit in Munich, Benoît Piédallu, National Project Manager of Shared Digital Services at the French Ministry of Education, outlined progress and persistent challenges in replacing American cloud services with European alternatives. The Ministry’s experience highlights both the feasibility of sovereign storage at scale and the difficulty of breaking dependence on Microsoft’s desktop ecosystem.

Rollout at scale

The French Education Ministry began exploring Nextcloud, an open-source storage and collaboration suite, in 2018. The COVID-19 pandemic accelerated adoption in 2020, and a 2021 fire at OVH’s Strasbourg data center—destroying the Ministry’s data—further underscored the need for resilient, sovereign infrastructure. By 2024, the Ministry had signed contracts with Nextcloud, deploying over 400,000 accounts with a target of 1.2 million users. Each account is allocated 100 GB of storage, though current usage averages just 3 GB per user. Around 80,000 sync clients remain persistently connected, demonstrating the system’s ability to handle large-scale file synchronization and federated account management.

Despite this progress, the Ministry has not extended its sovereignty push to desktop applications. Users retain the freedom to choose their software, and many continue to rely on Microsoft Office. This creates friction, as Piédallu acknowledged: complaints about compatibility issues often arise, with the Ministry’s response being to suggest alternative software. The disconnect between sovereign storage and non-sovereign desktop tools illustrates the broader challenge of achieving true digital autonomy.

“Nobody should be able to switch off or shut down our services from the outside. Nobody should be accessing our services from the outside.” — Benoît Piédallu, French Ministry of Education (The Register)

The Microsoft gravity well

The French government’s struggle to escape Microsoft’s ecosystem reflects a wider tension in Europe’s digital sovereignty efforts. While Nextcloud and similar platforms can replace cloud storage and collaboration tools, Microsoft Office remains deeply embedded in workflows. The European Union’s Technological Sovereignty Package aims to reduce reliance on non-European tech, but analysts warn this could complicate operations for organizations accustomed to seamless integration with hyperscalers like Microsoft, Google, and AWS.

Nextcloud’s recent release of Hub 26, which includes Euro-Office, may offer a partial solution. The productivity suite is designed to provide a European alternative to Microsoft Office, potentially addressing the desktop compatibility issues that have hindered the Ministry’s migration. However, user adoption of new tools—particularly in large, established organizations—remains a significant hurdle. The Ministry’s experience suggests that while sovereign storage can be deployed at scale, shifting user behavior away from entrenched tools like Microsoft Office will require more than just technical alternatives.

What’s next for European sovereignty

France’s efforts are part of a broader EU push to achieve digital autonomy, but the Ministry of Education’s case shows that sovereignty is not just about infrastructure. It also depends on user behavior, software ecosystems, and the availability of viable alternatives. The European Technological Sovereignty Package may provide policy support, but the real test will be whether organizations can persuade users to abandon familiar tools in favor of sovereign alternatives. For now, the French Education Ministry’s Nextcloud deployment proves that sovereign storage is achievable, but full autonomy remains elusive as long as desktops remain tied to Microsoft’s ecosystem.