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 no longer officially supports Windows 10, so do this if you want to keep using your older PC securely.
Microsoft has released Windows 11 KB5068861 and KB5068865 cumulative updates for versions 25H2/24H2 and 23H2 to fix security vulnerabilities, bugs, and add new features. Today's updates are mandatory ...