UK Competition Regulator Opens Microsoft 365 Subscription Probe

According to Reuters, reporting by Foo Yun Chee, the UK’s Competition and Markets Authority (CMA) announced on Wednesday that it is investigating whether Microsoft adequately informed personal and family subscribers about changes to Microsoft 365 plans after the company incorporated its Copilot AI assistant into the service.

The CMA said it will assess whether consumers understood the available subscription options, pricing differences, and renewal terms, with particular attention to whether customers were able to make informed decisions before renewing their subscriptions. The regulator emphasized that while it supports the adoption of artificial intelligence technologies, consumers should receive transparent information when product features and pricing change.

Microsoft said it is reviewing the regulator’s concerns and intends to cooperate with the investigation, according to Reuters.

Consumer protection meets competition policy

The latest inquiry reflects increasing regulatory attention to how technology companies integrate AI features into existing subscription services and whether those changes affect consumer choice.

The investigation comes as competition authorities in several jurisdictions examine Microsoft’s commercial practices across software, cloud computing, and artificial intelligence. While the UK probe focuses on consumer subscriptions, it also fits into a broader pattern of regulatory scrutiny over digital platforms’ market power and the ways companies introduce new AI capabilities into widely used products.

Competition regulators have increasingly argued that transparency around pricing, default settings, and subscription renewals can be important factors in preserving effective competition, particularly in digital markets where customers may face switching costs or remain within established software ecosystems.

Related: EU Moves to Bring Amazon and Microsoft Cloud Platforms Under Landmark Digital Competition Rules

Part of wider UK scrutiny of Microsoft

The Microsoft 365 consumer subscription investigation is separate from another ongoing CMA review launched earlier this year under the UK’s Digital Markets, Competition and Consumers Act.

That broader proceeding is examining whether Microsoft’s business software ecosystem—including Windows, Microsoft Office applications, Teams, and Copilot—should receive a “Strategic Market Status” designation. The regulator is evaluating issues including software bundling, interoperability, default settings, and whether Microsoft’s position could limit customer choice or make switching to competing products more difficult. The CMA has stressed that opening such an investigation does not imply wrongdoing by the company.

The UK regulator has also continued work on competition issues affecting cloud computing and enterprise software, including concerns about licensing practices and interoperability that could influence competition among cloud service providers.

Similar concerns have emerged elsewhere in Europe

The UK investigation follows similar regulatory action in Italy.

As Reuters previously reported, Italy’s competition authority opened an investigation in June into Microsoft’s Microsoft 365 pricing changes, alleging that consumers may not have been adequately informed after AI features such as Copilot and Designer were integrated into subscription plans. Italian regulators said customers were automatically moved toward higher-priced subscriptions unless they opted out, raising concerns about consumer choice and disclosure. Microsoft has said it will cooperate with that investigation and remains committed to complying with Italian consumer law.

The parallel inquiries suggest that European regulators are paying closer attention to how AI-enabled services are incorporated into existing subscription products, particularly when those additions coincide with pricing changes.

Source: Reuters