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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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Britain investigates Microsoft over business software dominance

UK Antitrust Regulator Launches Probe into Microsoft’s Market Position

By Paul Sandle

LONDON, May 14 (Reuters) - Britain will investigate Microsoft's dominance in business software using its powers to oversee big tech, its antitrust regulator said on Thursday, which could lead to targeted interventions to encourage competition.

Details of the Investigation

The Competition and Markets Authority said its "strategic market status" investigation, its fourth under powers granted last year, would examine whether the bundling of Windows, Word, Excel, Teams, Copilot and other products was uncompetitive.

Microsoft’s Response

A Microsoft spokesperson said the U.S. company was "committed to working quickly and constructively with the CMA to facilitate its review of the business software market". An SMS designation, which does not assume wrongdoing in itself, will also allow the CMA to intervene in the cloud market.

Importance of Business Software to the UK Economy

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 Competition and Innovation

"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.

Key Areas Under Scrutiny

BUNDLING, AI AND CLOUD TO BE EXAMINED

Global Antitrust Investigations

Microsoft faces antitrust investigations globally, including in the European Union and United States, targeting its business software, cloud computing and AI partnerships.

AI and Integration Concerns

The British probe will look at how AI competitors were able to integrate with Microsoft's business software, the CMA said.

Cloud Computing and Licensing Practices

The regulator has previously said Amazon and Microsoft's leading cloud computing positions raised concerns, with the latter singled out for its licensing practices.

Recent Developments in Cloud Fees

Both companies agreed to lower some cloud fees in March, doing just enough to see off the threat of tougher action.

Renewed Focus on Microsoft’s Cloud Licensing

The CMA opted to investigate Microsoft's cloud licensing practices again as part of the SMS probe launched on Thursday.

Timeline and Next Steps

The investigation will end by February, the CMA said.

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

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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