ESXi Host

ESXi Host cannot boot after upgrading to 6.7 U3- Page allocation error:Out of resources


  • ESXi host will not boot after upgrading to 6.7 U3
  • Below reported Error is displayed on the boot screen.
      • Shutting down firmware services…
        Page allocation error: Out of resources

        Failed to shutdown the boot services.
        Unrecoverable error


  • Restarting the host will not have any impact.


  • This issue is primarily noticed in many servers that are configured with ” UEFI Secure boot”
  • VMware have confirmed that this is a known issue and may be addressed shortly.



To resolve this issue , change the Boot option from UEFI secure boot / UEFI boot to Legacy boot option.

For any ESXi hosts running in Virtual environment you can follow the below article to configure Legacy boot – Enable or Disable UEFI Secure Boot for a Virtual Machine



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