Windows 11 includes a modern Notepad "app" with tabs and AI features, but the old notepad.exe is still hidden in the system. To make it the default again: Open Settings > Apps > Installed apps . Search for Notepad . Click the three dots (...) and select Uninstall .
If you don't want to uninstall the new app, you can just stop it from intercepting the "notepad" command:
Drainage Coventry