Meanwhile, the U.S. Competition authorities also similarly charged Microsoft with an illegal tying of its own browser - Internet Explorer, with its Windows Operating System. It was alleged that Microsoft violated the U.S. antitrust laws by engaging in a variety of practices aimed at excluding potential rivals, most notably the Netscape Corporation's Navigator web browser. In fact, for a decade, Microsoft lived under the constraints of a consent decree with the U.S. Government that essentially compelled the company to allow for "unbundling" of its web browsing software from its flagship Windows operating system.