Has the Windows Lock Screen Language changed automatically? Or did you change the display language, but the lock screen still shows the original language?

How do I add Korean language to Windows? To add the Korean language to your Windows 11/10 computer, you will have to install the Korean language pack.

Microsoft has released a preview of Windows 10 21H2 to the Release Preview channel, but hasn't announced anything new for the upcoming Windows 10 22H2.