Warning for unsaved files in notepadpp?

Solution 1:

1. Go to Settings -> Preferences -> Backup

2. Disable Remember current session for next launch

3. Disable Enable session snapshot and periodic backup

From Notepad++ User Manual (emphasis mine):

Session snapshot and periodic backup

• Remember current session for next launch: the current session is the current list of open files. The next time you run Notepad++, it will open with that same list of files
• Enable session snapshot and periodic backup: this will auto-save your changed file once every N seconds to the listed directory (default to %AppData%\Notepad++\backup).
  • It is not possible to select this option without ☐ Remember current session ... also being active
  • This is also how you enable Notepad++ to remember unsaved changes
  • This will allow you to exit Notepad++ and resume, remembering changes to files that hadn’t been intentionally saved
  • When you exit Notepad++ with unsaved changes, Notepad++ will not ask you to save changes. It will just keep the periodic backup file, and reload from there rather than from the normal disk location for the file
  • If you want Notepad++ to ask to you save edited files every time you close the file or exit Notepad++, do not enable this option.