I am using Visual studio 2015 Community.

When I first start without debugging (`CTRL` + `F5`) it works fine.
After I click `**X**` (close the windows) and click again (`CTRL` + `F5`). I get this error:

[![error](https://i.stack.imgur.com/0vj2d.png)](https://i.stack.imgur.com/0vj2d.png)