Click a hardly seen little pin icon (Expand the Ribbon) in the upper right corner when the Home tab is "visible".

Thanks indeed, but I'm sorry to have to say that don't see that icon between the box and the binoculars – only an upward arrow...

It is not between the box and the binoculars. I just magnified the icon for you. The actual position is where the magnified image points to. Can you please click Reset Window Layout (View tab) and share a screenshot of your ribbon in its entirety?


If there is no pin icon, then try this (click and select Show Tabs and Commands):

Guillaume Nichols 

Left alone the problem with the menu tab, which has already been addressed by Stepan Konev , why don't you simply change the shortcut in question to something working? File -> Options -> Keyboard shortcuts.

Here's the screen shot, and you were quite right to tell me to select “Show...” – now the trouble is solved.

Thanks again.