August 19, 2025—KB5066188 (OS Builds 19044.6218 and 19045.6218) Out-of-band

August 19, 2025—KB5066188 OS Builds 19044.6218 and 19045.6218 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...