France's Constitutional Council has blocked a law that would have banned children under 15 from using social media, ruling that the sweeping restriction placed a disproportionate burden on freedom of expression and communication and lacked sufficient safeguards around the age-verification system needed to enforce it.

The decision, issued on August 14, came less than three weeks before key restrictions were due to begin with the new school year in September.

It is a major setback for President Emmanuel Macron, who had made restricting children's access to social networks a prominent part of his government's child-protection agenda.

Parliament approved the legislation on July 21 after agreement between the National Assembly and Senate.

The final votes showed broad political support: senators backed it by 243 votes to two, while the National Assembly approved it by 279 votes to 81.

The central provision would have prevented children younger than 15 from opening or maintaining accounts on social-media services covered by the legislation.

Platforms would have been required to establish users' ages and remove or disable accounts that did not comply.

In practice, the enforcement mechanism meant platforms would need a way of checking the ages of users generally, not simply those who identified themselves as children.

That became one of the law's central constitutional problems.

The Council found that protecting children from online harm is a legitimate objective, but concluded that the mechanism chosen by Parliament imposed restrictions on constitutional freedoms that were not sufficiently necessary, appropriate and proportionate.

Universal age verification also raised concerns about privacy and the handling of personal information.

The ruling did not establish that France is constitutionally prohibited from restricting children's use of social media.

Instead, it rejected the design of this particular law.

A future measure could still survive constitutional scrutiny if lawmakers more narrowly define the services and risks being regulated, establish stronger safeguards and devise an enforcement system that interferes less with the rights of children and adults.

Warnings about those problems had emerged before Parliament passed the measure.

France's Council of State, which examined an earlier version of the proposal in January, said a general and absolute ban could cover very different kinds of online services, including platforms for which no comparable danger to children's health or safety had been demonstrated.

It also questioned a system that did not sufficiently distinguish between children's ages and maturity or preserve a meaningful role for parental authority.

Supporters of the legislation argued that stronger intervention was needed because of growing concern over children's exposure to addictive platform design, cyberbullying, harmful content and potential mental-health effects.

The proposal followed extensive political scrutiny in France of social-media platforms and their effects on minors, including an inquiry examining TikTok.

The constitutional dispute therefore centered less on whether children should receive stronger protection online than on how far the state may go to provide it.

A blanket age threshold is relatively simple to state, but enforcing it reliably can require platforms to determine the age of millions of people, including adults.

That creates a broader question about what information users must disclose before exercising ordinary rights to communicate, receive information or participate anonymously online.

France's decision also comes as governments elsewhere experiment with stricter age restrictions.

Australia has introduced a social-media minimum age of 16, while European governments and European Union institutions are considering different approaches to age assurance and child protection.

The French ruling demonstrates that such policies must satisfy not only technological and enforcement requirements but also national constitutional protections and European legal rules.

Macron has responded by seeking a new version rather than abandoning the policy.

He asked Prime Minister Sébastien Lecornu to prepare revised legislation capable of complying with French constitutional requirements and European law, with the government aiming to bring forward a replacement by spring 2027.

The immediate result is clear: France's planned under-15 social-media ban will not take effect as enacted.

The government must now redesign the measure if it wants to revive the restriction, balancing its stated goal of protecting children with constitutional guarantees covering expression, communication and privacy.