South Korea's Fair Trade Commission (KFTC) has been investigating allegations that the world's top software maker breached antitrust laws by incorporating the services into Windows.
"If the KFTC enters an order requiring Microsoft to remove code or redesign Windows uniquely for the Korean market, it might be necessary to withdraw Windows from the Korean market or delay offering new versions in Korea," Microsoft said in a US regulatory filing on Thursday.
The KFTC began its probe in 2001 when South Korean Internet portal Daum Communications Corp alleged Microsoft's bundling of the operating system with other services broke antitrust rules. It widened the probe following a similar complaint from RealNetworks in 2004. A ruling could come as soon as Wednesday, a KFTC spokesman said.
"No matter what Microsoft does, we will proceed with our deliberation and discuss it again at a plenary session on Wednesday," Lee Tae-hwi said by telephone.