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ESXi vmkernel and vmkwarning logs are filled with the alert: "WARNING: VmkMgmtSyncEventIoctl - unable to validate header" (2146560)

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  •  In the vmkernel log, you may see similar entries:

    WARNING: VmkMgmtSyncEventIoctl - unable to validate header

  • This affects other logs accuracy as the above message appear so frequently that all other logging is drowned out and rotated.


This issue occurs on any HPE ProLiant server running HP VMware Customized images.


This is not a VMware issue.

To resolve this issue, see HP CUSTOMER ADVISORY - Document ID: c04930510 for instructions on recommended driver/firmware combination.

Disclaimer: VMware is not responsible for the reliability of any data, opinions, advice, or statements made on third-party websites. Inclusion of such links does not imply that VMware endorses, recommends, or accepts any responsibility for the content of such sites.

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