How to fix missed Navigate Backward and Forward buttons in Visual Studio

In VS Click Tools,
Import and Export Settings,
select Import Selected environment settings and click Next,
select Yes, save my current settings and click Next,
select General Development Settings, and click Finish.


Or use shortcut: Ctrl+- and Ctrl Shift +-
http://blogs.msdn.com/b/zainnab/archive/2010/03/01/navigate-backward-and-navigate-forward-vstipedit0024.aspx