@Cletos ,
Depending on what version of Notepad++ you were running, and what’s happened since you last opened Notepad++:
Exit Notepad++ Use Windows Explorer to go %AppData%\Notepad++ You will have session.xml and hopefully a file called session.xml.inCaseOfCorruption.bak . Rename session.xml to session.after.xml Rename session.xml.inCaseOfCorruption.bak to session.xmlDepending on the state, and how little you’ve done since you had the problem, and what version of Notepad++ you are running, that backup session might contain the ~100 txt files.
If not (if there’s no session.xml.inCaseOfCorruption.bak , or if the copy there was written after your session got messed up), there is nothing we can do for you, as the backup session isn’t there. (Hopefully, those 100 txt files were all real files, not new 1 … new 100 with no saved changes ever – if they were, you can look in the backup subdirectory, but again, no guarantees the files are there).