A US Army soldier wearing a prototype IVAS headset.US ArmyMicrosoft is discontinuing HoloLens after losing billions of dollars on the project.The company's 10-year IVAS contract to make goggles for the Army is worth up to $22 billion.Microsoft is pulling back on IVAS work, putting its involvement in the contract in doubt.Microsoft lost billions of dollars on its HoloLens mixed-reality project, and the company's involvement in a related contract with the US Army is in doubt, according to people familiar with the situation.The software giant recently confirmed plans to halt production of the HoloLens 2 headset and will stop supporting the device.