When Notepad++ installer with the '/S' optional param is used while a previously installed Notepad++ instance is running, it does not update the locked main 'notepad++.exe' binary, but the installer still reports success (exit code == 0, regkeys actualized according to the installer version used...).
Moreover - because the installation/upgrade then looks like it is done, some automatic update services like winget cannot be used until a next N++ version is released (winget erroneously reports that the current version is already installed...).
The fix consist to set error code and quit installer, when installer in silent mode, and there's an instance of Notepad++ open.
Fix#10189, fix#10277, fix#22514, fix#14236, fix partially #8514, close#14251
5c80be7667