Unable to Activate Windows Store App

Question

I installed a retail version of Windows 8 Pro. I downloaded and installed Visual Studio Express 2012. I asked for and received a developers certificate. Then I tried to c

Answer 1

This happened to me once too, but the deleting build directories advice fixed it. I assume that this is only one project since it's a Hello World app; otherwise I would ask if you deleted build directories from all projects in your solution.

You can also try running "Clean Solution" from the BUILD menu in Visual Studio.

I'm sorry...it's horrible if this is happening on a clean install as you describe.