A video that appears to show Microsoft's new web browser in action has leaked online.

The PC maker first announced project 'Spartan' in an event in January but fans only got a taster of its potential.

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WinBeta has now obtained a video showing the browser in full, mainly highlighting its integration with Cortana.

The digital assistant is seen appearing in the address bar and providing additional information in a right side panel.

There is also an 'ask Cortana' option among the features.

Microsoft is expected to officially reveal more about project 'Spartan' at a Windows 10 preview event later this month.

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