As per https://www.microsoft.com/en-US/windows/end-of-support?r=1
How will consumers enroll in the Windows 10 Extended Security Updates (ESU) program?
Enrollment will be available on Windows 10 devices running 22H2 through a built-in tool available in Settings for eligible devices.
For additional info, refer to
https://www.yourwindowsguide.com/2025/09/cant-enroll-in-windows-10-esu.html
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hth
Marcin