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    KB5089592 Warning: Secure Boot Certificates Expire June 2026 (WinRE Update)

    Microsoft published KB5089592 on May 26, 2026, as a Safe OS Dynamic Update for Windows 11 version 26H1 that refreshes the Windows Recovery Environment, replaces KB5089591, and arrives with a prominent warning about Secure Boot certificates beginning to expire in June 2026. That warning is the...
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    • kb5089592 secure boot windows 11 26h1 winre update
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