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UK opens antitrust probe into Microsoft's business software

Published by Global Banking & Finance Review

Posted on May 14, 2026

2 min read

· Last updated: May 14, 2026

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UK opens antitrust probe into Microsoft's business software

Overview of the Antitrust Investigation

Background and Purpose

LONDON, May 14 (Reuters) - Britain launched an antitrust investigation into Microsoft's dominance in business software that could lead to targeted action if the U.S. company is found to have "strategic market status" in the sector.

Scope of the Investigation

Bundling of Microsoft Products

The Competition and Markets Authority said the investigation - its fourth under new powers granted last year - would examine whether the bundling of Windows, Word, Excel, Teams, Copilot and other products was weakening competition.

Integration with AI Competitors

It would also look at how AI competitors were able to integrate with Microsoft's business software, it said.

Potential Impact on Cloud Market

An SMS designation would also allow the CMA to intervene in the cloud market, where it has previously found Microsoft's use of software licensing could be reducing competition in cloud services.

Stakeholder Perspectives

Comments from the CMA

CMA Chief Executive Sarah Cardell said business software was a cornerstone of the British economy, with hundreds of thousands of customers relying on Microsoft's systems.

Ensuring Market Fairness

"Our aim is to understand how these markets are developing, Microsoft's position within them and to consider what, if any, targeted action may be needed to ensure UK organisations can benefit from choice, innovation and competitive prices," she said in a statement on Thursday.

Microsoft's Response

A Microsoft spokesperson said: "We are committed to working quickly and constructively with the CMA to facilitate its review of the business software market."

Timeline and Next Steps

The investigation will conclude by February 2027, the CMA said.

(Reporting by Muvija M and Paul Sandle; editing by William James and Sarah Young)

Key Takeaways

  • The CMA began a Strategic Market Status investigation into Microsoft’s business software ecosystem—covering tools like Windows, Office, Teams and Copilot—to address concerns over licensing practices and cloud competition (gov.uk).
  • Designation as having strategic market status (SMS) would grant the CMA powers to impose conduct requirements and remedies, potentially over the next 9 months (gov.uk).
  • The probe follows earlier CMA findings and industry commitments: material commitments from Microsoft and Amazon on egress fees and interoperability were secured, while allegations of higher licensing fees on rival clouds have spurred legal and regulatory scrutiny (gov.uk)

References

Frequently Asked Questions

What is the focus of the UK's antitrust investigation?
The investigation focuses on Microsoft's dominance in business software.
What could happen if Microsoft is found to have strategic market status?
Targeted actions may be taken against Microsoft if it is found to have strategic market status.
Who is conducting the antitrust probe against Microsoft?
The British government has launched the antitrust probe.
When did Britain launch the antitrust investigation into Microsoft?
Britain launched the investigation on Thursday, May 14.

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