The EU General Court, in upholding the Commission’s decision on abuse of a dominant position of the PC operating systems, turns back the clock (Microsoft)

Overview In its 2004 decision, the Commission concluded that Microsoft had committed two types of abuse which where both related to the dominant position which it held through Microsoft Windows in the PC operating systems market: first, the Commission held that Microsoft had failed to supply its competitors with information necessary for them to allow their workgroup server operating systems to interoperate with Microsoft’s workgroup server and PC operating system; secondly, Microsoft had engaged in an illegal tie by bundling its Windows Media Player into its Windows operating system. The Commission imposed a record fine on Microsoft and imposed two remedies upon the company. The Interoperability case In September 1998, Sun Microsystems called upon Microsoft to disclose all the