Microsoft spokesman Jesse Verstraete announced it was appealing against the record 899 million euro ($1.39 billion) fine imposed by the European Commission for not providing key code to rival software makers and prolonged misbehaviour allegations. "Microsoft today filed to the (EU) Court of First Instance an application to annul the European Commission decision of February 27," the U.S. software giant said in a late Friday mail. "We are filing this appeal in a constructive effort to seek clarity from the court," it said. Microsoft has been fined a total of 1.68 billion euros by the EU for abusing its 95 percent dominance of PC operating systems through its Windows operating system. The Commission had initially fined Microsoft 497 million Euro in March 2004 for deliberately damaging rivals by offering its Windows Media Player with Windows. The second fine of 899 million Euro followed in February 2008, that's also the biggest ever fine imposed on a company by the EU committee.