Microsoft has filed another batch of technical information with the European Commission, in an effort to avoid an increase in fines.

The software giant was warned on 12 July that unless it filed all the necessary technical information its workgroup server software by yesterday, 31 July, it would face fines of €3 million a day. The Commission has since been provided with further documentation which is now being analysed to see determine whether it is complete, said an EC spokeswoman, who would say when that analysis would be complete.

On 12 July, the Commission fined Microsoft €280.5 million for not supplying the technical information about the protocols used by its workgroup server software requested in a 2004 anti-trust ruling. That was on top of an original €497 million fine for abusing its monopoly in desktop PC operating systems to gain advantage in the markets for workgroup server operating systems and media player software.

Microsoft was ordered to offer a version of its desktop operating system Windows XP without a built-in media player, and to document the communications protocols used by Windows workgroup server products so that others could build competing products.

Numerous deadlines for the supply of the documentation have come and gone. The Commission initially gave Microsoft 120 days to provide the information, and threatened further fines in March and June last year. On 10 November, the Commission told Microsoft that it would face fines of up to €2 million a day if it did not comply by 15 December, and finally imposed the €280.5 million fine on 12 July.