After installation of Notepad++ 8.5.2 two entries of "Edit with Notepad++" in context menu are shown with Directory Opus (12.31). Standard File Explorer is fine and only shows one entry.
Notepad++ seems to have a bit of trouble with the context menu as of late (according to the changelog), so unsure which software is at fault.
Double-click Preferences / Miscellaneous / Advanced [Troubleshooting]: ignore_context_menus and add NotepadPlusPlus_* to it to remove the duplicate menu item.
We'll block the duplicate shell extension by default in the next update.
This would remove the context menu entries and reinstall them.
(I wrote my own Notepad++ context menu entries, but a quick test with 8.5.2 installs just 1 extra "Edit with Notepad++" entry. Which is how it should be).
Sorry, but after these recent Notepad++ changes (and DO ones?) that context menu entry is gone forever. I do not see it in DOpus any more. Tried reinstalling npp. The entry is there in Explorer.
(Windows 10, npp 8.5.3)
Just noticed this the other day and spent some time trying to fix it via the registry and then uninstall/reinstall but without success. This solution did the trick! I should have checked here earlier!!!