BRUSSELS - European Union anti-trust regulators are set to hit Microsoft with a hefty fine on Wednesday for breaking a promise to offer consumers using its Windows system a choice of rival Internet browsers, people familiar with the case said.
EU anti-trust chief Joaquin Almunia is expected to use the fine - which could run into hundreds of millions of euros - to set an example after the US software giant became the first company to break a promise made to end an anti-trust probe.
Almunia will announce his decision at 1130 GMT, the sources said. Reuters reported last week that EU regulators would fine Microsoft before the end of March.
EU rules mean the company could be penalized $7.4 billion or 10 percent of its fiscal 2012 revenues although regulators are not expected to levy such a high fine.