Microsoft has said it will not seek to delay sanctions as a result of an anti-trust case won by the European Commission over its Windows operating system.
In December Microsoft lost an appeal in relation to the way Windows Media Player is automatically bundled as part of the Windows operating system.
The commission had previously ordered that the player must be made a separate item to make the market fairer for alternative media player providers.
Microsoft said it will now implement this sanction without delay, but it will still be appealing a main commission ruling in March last year that it had abused its market dominance.
Microsoft said a new version of Windows without the media player will be available for the European market over the next few weeks.