Hi, is this a problem with the Windows Taskbar, or with one of Firefox's toolbars? I actually can't think of a way to change any of Firefox's toolbars from horizontal to vertical. However, if you could mention which one is the problem, that would be helpful. If either your Bookmarks Toolbar or your Menu Bar has turned off and you want it back, you can do that. See: * [[Bookmarks Toolbar - Display your favorite websites at the top of the Firefox window]] * [[Restore the Menu bar in Firefox]] And if your Firefox Sidebar opened and you want to close it, there should be an "X" button to do that. See: [[Use the Firefox Sidebar to access bookmarks, history and synced tabs]].

If this is the Windows Taskbar then simply drag it back to the position where you want it to appear and possibly lock this bar the prevent dragging it accidentally.