Xamarin: Project not selected to build for this solution configuration

If your Xamarin Android, iOS or UWP application is not starting when you are hitting the Run or F5 button, then probably your Build configurations are misconfigured. This usually happens when you are opening a too old source code. No worries, we will have a solution for it.

Solution

Right click on your solution, and select configuration manager
Ensure that the desired project has the deploy column ticked.