August 19, 2025—KB5066189 (OS Builds 22621.5771 and 22631.5771) Out-of-band

August 19, 2025—KB5066189 OS Builds 22621.5771 and 22631.5771 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...