Microsoft's ESU program provides security updates for Windows 10. You normally just head to Windows Update to register for the program. If the option doesn't appear, there are ways to trigger it.

Microsoft has shipped a fix for commercial customers who believed they were enrolled in the Extended Security Updates (ESU) program but received error messages on the ...

The option to sign up for an ESU subscription is available to any PC running Windows 10, version 22H2, Home, Professional, Pro Education, and Workstation editions, with the latest update installed.

Support for Windows 10 officially ended October 14th, and since then most users should have already received Extended Security Updates (ESU) if they registered for them. However, for some, the ESU ...