A family of Microsoft word processing software products for creating web, email, and print documents.
Alt+Fn+F9 and Alt+F9 both gives me Settings. Is there some other way to get field codes?
Do you mean that it displays the Windows Settings? In that case, as Charles suggested, your computer has hijacked these shortcuts.
You can specify a custom shortcut in the Customize Keyboard dialog box (File > Options > Customize Ribbon > Customize). See the screen shot below.