Microsoft is to make key concessions to the European Commission in an effort to avoid a repeat of the antitrust cases across the Atlantic.
The Redmond giant has been investigated by the Commission for more than three years on whether it used its strong market position to stifle competition.
Mario Monti, the European competition commissioner, is understood to be considering fines of up to 10 per cent of Microsoft's worldwide turnover, and will demand substantial changes to its business practices if he finds the company guilty of breaching antitrust law.
But John Frank, Microsoft's European counsel, maintained that the company had made concessions and would allow two technical standards to be made public enabling rivals to make full use of Windows.
Frank said that this was a specific concern for the Commission and that publishing technical information on Kerberos and the Common Internet File System would address those concerns.
These are the first concessions Microsoft has made and, although the Commission declined to comment, analysts said it was unlikely to be satisfactory.
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