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It's time for our fourth Ask Microsoft Anything (AMA) about updating Secure Boot certificates on your Windows devices before they expire in June of 2026. If you've already bookmarked Secure Boot play...
Pearl-Angeles
Updated Apr 15, 2026
AMA
Marcin_Kolodziejczak's avatar
Marcin_Kolodziejczak
Copper Contributor
Apr 23, 2026

How Hyper-V env will work ? All Virtual Machines will be ok, if a hyper-v host will have new certifiacates?

  • Prabhakar_MSFT's avatar
    Prabhakar_MSFT
    Icon for Microsoft rankMicrosoft
    Apr 23, 2026

    Hi Marcin_Kolodziejczak​, Hyper-V host updates does not change the existing VMs that did not already have the new certificates.   All new Hyper-V VMs created have the new certificates pre-installed.  If you have long running VMs, certificates need to be deployed.  Microsoft will be updating the VM devices as part of high confidence based roll out in the future update. You can also apply the certificates to firmware by configuring AvailableUpdates registry value to 0x5944 after updating VM device to latest available windows patches.

    • Marcin_Kolodziejczak's avatar
      Marcin_Kolodziejczak
      Copper Contributor
      Apr 23, 2026

      Thank You for your answer !