October 20, 2025—KB5070773 (OS Builds 26200.6901 and 26100.6901) Out-of-band

October 20, 2025—KB5070773 OS Builds 26200.6901 and 26100.6901 Out-of-band Windows Secure Boot certificate expirationImportant: Secure Boot certificates used by most Windows devices are set to expire starting in June 2026. Microsoft has been updating these certificates on consumer and non-managed...