Telegraph report:

Since the ruling [by the European Court of First Instance], Microsoft’s chief executive Steve Ballmer has been in almost daily contact with Neelie Kroes, the European commissioner for competition policy.

Following these intensive discussions, Microsoft has agreed to change the way it provides rivals with information that allows them to write programmes that mesh with Windows.

Microsoft will now make information available to open source developers, with licensing terms that allow every recipient of the resulting software to copy, modify and redistribute it in accordance with the open source business model.

In a statement today Ms Kroes said: “The Commission’s 2004 decision set a clear precedent against which Microsoft’s anti-competitive behaviour could be judged.

“Now that Microsoft has agreed to comply with the 2004 decision, the company can no longer use the market power derived from its 95pc share of the PC operating system market and 80pc profit margin to harm consumers by killing competition on any market it wishes.”

Microsoft has agreed to slash its requested royalties for a worldwide licence, including patents from 5.95pc to 0.4pc - less than 7pc of the royalty originally claimed.

The software group has also abandoned its demand for a royalty of 2.98pc of revenues from software developed using licensed information…