Recently I was working on Windows Store App on Visual Studio 2012.

I had an issue with the intellisense with XAML editing – it does not have intellisense.

 

I found that might be something to do with the user profile.

There was issue that I didn’t care to investigate that:

Sometimes running the Visual studio as “Administrator” account created a new project.

This new project would have problem with intellisense when it was opened as normal “user”.

So if I had this issue I just try to close the visual studio and run as either “user” or “administrator” and the intellisense come back up again.

 

Side topic: there also would be problem if the simulator was ran and launch by different user.