In April 2026, France takes a decisive step toward digital sovereignty. The government announces its intention to migrate some of its computers from Microsoft's Windows operating system to Linux, the free and open source operating system. A symbolic and strategic decision, motivated by growing geopolitical tensions with the United States and an expressed desire to take back control of France's digital destiny.

A decision driven by geopolitics

The international context plays a central role in this initiative. Since Donald Trump's return to the White House, relations between the United States and their European allies have deteriorated considerably. Targeted sanctions against governments or personalities critical of Washington have sown discord even within European chancelleries. France, like other Old Continent countries, is drawing consequences from this instability:

« We must take back control of our digital destiny. »
— David Amiel, Minister Delegate for Digital Affairs

For Paris, depending on an American publisher — even a reliable one under normal circumstances — now represents an unacceptable sovereign risk. Microsoft Windows has totally dominated French administrations for decades: email systems, office tools, file systems — everything rests on the Redmond ecosystem. This dependency, deemed too fragile, must evolve.

Who is affected? DINUM in the front line

The migration will begin with DINUM (Interministerial Directorate for Digital Affairs), the government agency responsible for leading the digital transformation of the French state. It coordinates the digital services of all ministries and has the technical expertise to carry out such a transition.

No precise calendar or specific Linux distribution has yet been announced. Caution is warranted: switching thousands of public servants to a new work environment requires preparation, training and support. Experts agree that progressive migration, workstation by workstation and service by service, is the only reasonable path.

Microsoft Teams replaced by a French tool

The migration to Linux is not the only notable decision. In parallel, the French government announces the abandonment of Microsoft Teams in favor of Visio, a French videoconferencing tool built on the open source software Jitsi. This choice illustrates the consistency of the strategy: favoring sovereign or open source solutions, preferably of European or French origin.

Other projects are already underway:

• The national health data platform will be migrated by end of 2026 to infrastructure less dependent on American providers.
• The use of the French sovereign cloud (notably SecNumCloud) is encouraged for hosting sensitive government data.
• Public procurement increasingly favors open source solutions and European publishers.

Linux: a mature alternative for administrations

Some observers might question the viability of Linux in such a demanding professional environment as the French administration. Yet Linux is no longer the preserve of bearded developers from the 2000s: today it is a robust, secure system perfectly suited to common office uses.

Several distributions stand out for business or administrative use:

• Ubuntu LTS (Canonical): very widespread, intuitive interface, guaranteed long-term support.
• Debian: extremely stable, preferred in sensitive environments.
• Fedora or RHEL (Red Hat Enterprise Linux): robust, used in many critical global infrastructures.

For daily tasks — web browsing, emails, word processing, spreadsheets — Linux perfectly meets needs. Suites like LibreOffice or OnlyOffice allow working with Microsoft Office formats without major difficulty.

A broader European movement

France is not alone in this approach. The European Union itself is pushing to reduce technological dependence on major American and Asian providers. Germany has engaged in similar reflections; several member states are testing or have deployed Linux in their administrations. The city of Munich (Germany) has extensive experience in this matter, with its LiMux project, even if results were mixed.

This movement is part of a logic of dual sovereignty: technological and democratic. No longer depending on a foreign publisher to access one's own data means guaranteeing the independence of institutions in their daily operations.

The challenges to overcome

The transition will not be without obstacles. The main challenges identified by experts are:

• Staff training: moving from Windows to Linux, even on a simplified interface, requires serious support.
• Software compatibility: some business software, specifically developed for Windows, will need to be adapted, migrated or replaced.
• Resistance to change: in any large organization, migrating established systems faces well-entrenched habits.
• Transition cost: while Linux is free, the migration itself — training, support, development — represents a significant investment.

Despite these challenges, the government appears determined to move forward. The stakes are not only technical: it is a question of national resilience in an era where digital technology has become infrastructure as critical as roads or electrical networks.

What this changes for citizens

In the short term, nothing will change for French citizens in their daily interactions with public services. Government websites will remain accessible from any browser, on any operating system. The migration concerns the internal workstations of public servants, not citizen-facing interfaces.

In the longer term, however, this decision could have positive effects:

• Reduction in software license costs for the state (and therefore taxpayers).
• Better security: Linux is renowned for its robustness against viruses and malware.
• Development of the French and European digital ecosystem.
• Inspiring model for local authorities wishing to do the same.

France is taking a calculated but coherent risk, consistent with its ambitions as an autonomous digital power. In a world where data is the new oil and operating systems are gateways to entire infrastructure, taking back control of these fundamental building blocks is far more than a technical choice: it is a political act.