How can Microsoft legally do that? Notepad++ is GPL-licensed open source. It's on Github.[1]
[1] https://github.com/notepad-plus-plus/notepad-plus-plus
Notepad++ isn't [Windows Notepad](https://apps.microsoft.com/detail/9msmlrh6lzf3)
Notepad++ isn't [Windows Notepad](https://apps.microsoft.com/detail/9msmlrh6lzf3)