Cannot create a file when that file already exists on rebuilding project

Question

I'm testing OneSignal in my Xamarin.Forms project, First time when I create my project and add OneSignal nuget package to it everything is ok and I can run and build my project but when I close and reopen Visual Studio it seems my project is broken and not build anymore: Cannot create a file when that file already exists.

Is anyone know what should I Do?

Answer 1

I had the same issue after installing a Preview of Visual Studio. I resolve this by deleting all the files in C:\Users\username\AppData\Local\Xamarin\MonoTouch

Hope this helps you or someone else.