Just a quick heads up if you are having issues trying to use Vuforia View with MS HoloLens and the app keeps going back into sleep mode: It could be just that the HL is updating in the background with a Windows 10 update which we found out the hard way just prior to a big demo. There are no warning or permissions sought by the device and nothing on screen warns you of the fact that an upgrade is actually taking place which is extremely frustrating as it WILL always happen at the worst possible time. Not just Vuforia View affected, but all other installed apps by appearing to just not work.
So if you are having difficult in getting the View to operate as normal, check in the Settings on the HL to see if an update is sneakily happening in the background!
That's it! Don't get caught out like we did!!!!
This did the trick for me. Thanks for sharing!
You are very welcome!!