Hmm, I wonder how we missed that post originally. I know you haven’t been back, but sorry for not replying.

My advice would have been similar to what I said here.

@Vin-dickator ,

I appreciate that you were trying to help. However, I don’t know whether that would really fix it. First, because that would just change it so the “edit in Notepad++” entry would go away, rather than allowing both to co-exist. Also, given the way that @cobaltcoyote changed the association, there’s a good chance it’s not even using the batfile entry in the registry anymore; Notepad++ possibly created a separate key, and redirected .bat to that key, rather than to the batfile. The OP would then need to first change Computer\HKEY_CLASSES_ROOT\.bat back to having a (Default) of batfile before that fix would work – and probably wouldn’t need that fix if the old batfile had been left unmodified.

I would then suggest manually adding a new verb below Computer\HKEY_CLASSES_ROOT\batfile\shell, with key=Notepad++, subkey=command with (Default) set to "c:\program files\notepad++\notepad++.exe" "%1" %* (or just change the edit command from notepad.exe to the notepad++ command I just listed.)

But the fundamental problem was the Open With bug originally described. And following my advice from the other post would help fix that underlying root cause, too.

Open Registry Editor, (regedit in Run {Win+R})

Goto

Computer\HKEY_CLASSES_ROOT\batfile\shell\open\command

Change “default” key to

"%1" %*