How to show Android Studio's Messages Window?

Issue

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 ) twice or more in order to see the window.

When the window is not shown, View > Tool > Messages Alt + 0 is grayed out as shown by the following screenshot. How can I show the window when there are build errors?

I am running the latest Android Studio on Windows 8.

[Edit] 2018-04-02

Android Studio 3.1 seems to have this window removed, many people may come here because of missing the Messages Window due to a different reason, and yuval's answer may be the right one in this case.

Solution

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.

Answered By - Kate