January 13, 2026—KB5073724 (OS Builds 19045.6809 and 19044.6809)

January 13, 2026—KB5073724 OS Builds 19045.6809 and 19044.6809 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 business...

November 11, 2025—Hotpatch KB5068840 (OS Build 20348.4346)

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October 14, 2025—KB5066877 (Security-only update)

October 14, 2025—KB5066877 Security-only update 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 business devices for the...

September 9, 2025—KB5065427 (OS Build 14393.8422)

September 9, 2025—KB5065427 OS Build 14393.8422 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 business devices for the...