@Konsolate said: Everything is lost. Also, while we confirmed with @zack-mosbrucker that the backup folder was empty, you never confirmed that. Are you sure that folder was empty, or did your session file just get reset? (If you don’t know where yours is, it’s probably in %AppData%\Notepad++\backup\ – if it’s not there, share your ? > Debug Info and we can help you find it.) Notepad++ backs up the session file into session.xml.inCaseOfCorruption.bak, so if you still have files in the backup\ folder, then you can recover the old session if you exit Notpead++, rename session.xml.inCaseOfCorruption.bak to session.xml, and restart Notepad++, and it will go back to the previous version of the session file. And if it still doesn’t open all the files from your backup folder, you can just manually open those files from Notepad++, and then save them to a reasonable known location on your computer, so that you won’t lose them again in the future.