Microsoft Corp. lost a European Union challenge to an 899 million-euro ($1.1 billion) antitrust fine, with a court saying it “essentially” upheld the penalty.

The EU General Court cut the fine by 39 million euros, or 4.3 percent, to 860 million euros in a ruling today. The Luxembourg-based tribunal rejected all of Microsoft's arguments over the fine levied by the European Commission for the company's failure to obey an order to share data with rivals.

The fine was on top of Microsoft's earlier penalties of 497 million euros and 280.5 million euros in the antitrust case and surpassed only by a 1.06 billion-euro levy against Intel Corp. during a period of EU scrutiny of U.S. technology companies.

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