I was working on my office machine. While working I opened a JavaScript based Windows Store Application. When I tried to run application I got following exception,
I was baffled due to this exception. After sort of research I found that I was on VPN. I have no idea why on VPN this exception occurred. But to get rid of this exception you need to follow these two steps
- Closed all connections to VPN
- Restart machine
After performing above two steps you should not get above exception. I hope this quick post is useful. Thanks for reading.
Dhananjay Kumar 
i am developing a music app for windows store, want to add live tile feature to it.. but due to some reason, the Background Task isn’t debugging ….. error occurs saying “Background Task.background task cannot be activated.. activation failed… Any solution ??