Microsoft lost its appeal of a European antitrust order Sept. 17 that obliges the technology giant to share communications code with rivals, sell a copy of Windows without Media Player and pay a $613 million fine — the largest ever by EU regulators.

The EU Court of First Instance ruled against Microsoft on both parts of the case, saying the European Commission was correct in concluding that the world’s biggest software company was guilty of monopoly abuse in trying to use its power over desktop computers to muscle into server software.