How to show Android Studio's Messages Window?

Question

When I build a project and there are errors, the Messages window that shows all the errors does not always show. I have to build the project (i.e. Ctrl + F9

Answer 1

It was a bit different in my case. I just closed the Message Tool Window with this red cross on the left and then this window completely disappeared and would not show again even after several rebuilds, View > Tool > Messages Alt+0 was also grayed out. The only thing that helped to bring the Window back is to break the build, so it would be some compiler errors. After that the window has reappeared showing those errors. Now the window is still there, does not vanish. Hope this helps somebody.