The European Court of First Instance essentially upholds the European Commission's decision finding that Microsoft abused its dominant position. However, the Court has annulled certain parts of the decision relating to the appointment of a monitoring trustee, which have no legal basis in European Community law.
[European Court of First Instance Press Release]

The European Commission welcomes today's ruling by the European Court of First Instance upholding the European Commission's 2004 decision on Microsoft's abuse of its dominant market position and confirming the totality of the fine imposed. In this decision, Microsoft was fined €497 million for infringing the EC Treaty rules on abuse of a dominant market position (Article 82) by leveraging its near monopoly in the market for PC operating systems onto the markets for work group server operating systems and for media players. This conduct hindered innovation in the markets concerned to the detriment of consumers. To put an end to this abusive behaviour, the European Commission ordered Microsoft to disclose interoperability information which would allow non-Microsoft work group servers to achieve full interoperability with Windows PCs and servers and to offer a version of its Windows operating system without Windows Media Player. The Court's ruling confirms that the European Commission was right to prohibit Microsoft's anti-competitive conduct which harmed competition to the detriment of consumers.
[European Commission Press Release]