@Raul-Chiarella Only thing I can think of is if you have a keyboard shortcut installed for Notepad++? Search in Windows for notepad++.exe and for every instance of that file found, right-click on it and open the properties. In the Properties dialog, in the Shortcut tab (which should show by default), check that the Shortcut key: field says None. If not, select the Shortcut key field and delete the contents. It’s a long shot, but this could cause the behavior you’re describing.