Have used NotePad++ for years.
Since yesterday, it will no longer open
A small window open saying that there is an Exception WM_Create
did you update anti-virus, firewall or any other safe-guard application recently?
Thanks for answering. Yes, I updated Avast. I tried turning Avast off, still no luck.
still thinking that it might be related to the AVAST update.
Could you try uninstall AVAST, reboot machine and restest?