UK Launches Antitrust Investigation into Microsoft Office Bundling Practices

Published on May 14, 2026

The UK antitrust regulator has confirmed its investigation into Microsoft Office. This suite, which includes Word, Excel, Teams, and Copilot, has long been a staple in the business software landscape. Until now, its dominance went largely unchallenged.

Concerns have emerged about whether Microsoft’s bundling strategy stifles competition. Critics argue that offering these applications as a package may unfairly disadvantage rival products. This inquiry could reshape how software companies approach product bundling in the future.

The Competition and Markets Authority (CMA) has begun gathering evidence from various stakeholders, including competing firms and industry experts. They are assessing the competitive landscape and examining the implications of Microsoft’s practices. Early reports suggest that this investigation may last several months.

The outcome could significantly impact Microsoft’s market position. An unfavorable decision might force the company to alter its business strategies or even face penalties. For competitors, this could mean improved opportunities to capture market share in the software industry.

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