FIXED: Drag and drop files into Notepad++
I noticed that a clean install of Notepad++ doesn’t allow you to drag and drop files into it on Windows 10. The fix is simple. In the start menu, edit the properties of the shortcut (on Windows 10, the shortcut is stored in C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Notepad++ )
Clear out the “Start in” textbox so that it is blank (its old value is “C:\Program Files\Notepad++”).
Click OK. Problem is fixed.
Opinion: During a drag and drop, Notepad++ probably attempts to open the “Start in” directory, of which it does not have write access, and this may cancel the attempted drag and drop operation.