I'm happily in the middle of coding then I try to launch my app in debug mode but I get this error message.
Unable to activate Windows Store app
This app failed to launch because of an issue with its license
The app was launching fine a few minutes earlier so this came as a surprise. I tried restarting Visual Studio but doing so did not help.
I got the annoying "renew your developer license" dialog yesterday I think. It had renewed without issue.
How do I make this error message go away so i can debug my app?
Well, I got it working by deleting the main project's 'bin' and 'obj' folders. Cleaning and Rebuilding wasn't enough. Hope this answer saves someone else the few minutes of confusion I just experienced.