However Google, which is facing antitrust probe in U.S. and Europe, has maintained that it did not offend anyone and said it simply gives people quick and easy access to the information they want.

But even under "the bright lights of regulatory scrutiny on two continents,” Heiner said Google is not on its best behavior.

Heiner renewed the complaints that date back from 2011 that Google did not keep its words to hand over the data that Microsoft needs to improve the viewing of YouTube videos on Windows Smartphones. He also added a new allegation, "Last month we learned from YouTube that senior executives at Google told them not to enable a first-class YouTube experience on Windows phones," in his blog post.

However Google denied Microsoft's accusation saying "We've worked with Microsoft for several years to help build a great YouTube experience on Windows phones."

Read also: 8 Outstanding Features Of Microsoft's Android Rival, Windows Phone 8

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