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Clearing TPM alarms after replacing TPM chip or resetting TPM keys for ESXi

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If you have a supported Trusted Platform Module (TPM) device that has been installed in your ESXi host after the initial installation and you either replace the TPM chip and/or you reset the TPM keys within the system BIOS, you may find several TPM alarms that is raised within your vCenter Server including:

  • Host TPM attestation alarm
  • TPM Encryption Recovery Key Backup Alarm
  • The new host TPM endorsement key doesn't match the one stored in the DB


I recently had to resolve this in my lab after clearing the TPM keys within the system BIOS, this was for some testing I was doing, but I could not figure out how to get vCenter Server to clear the previous endorsement keys associated with the ESXi host.

After a bit of searching, I came across this VMware KB 81446 which outlines a solution to one the scenarios I mentioned above where you would see these TPM alarms, which is replacing the TPM chip, but I came to find out that the workflow is also applicable if you had cleared the TPM keys and new ones were generated prior to re-installing ESXi. The KB was missing a some details, which I have already shared in the feedback and I think there is a more streamline method which I have shared below.

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Quick Tip - How to monitor when ESXi filesystem and partitions are filling up?

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Here is another tidbit on how you can leverage the power of vSphere Events, which now includes over 2K+ as of vSphere 8.0 Update 1 to help monitor when an ESXi filesystem and/or partition is low on disk space.

With vSphere 6.7 or later, we have two events that you can use to help alert when either an ESXi ramdisk (e.g. /var) or VFAT partition (e.g. bootbanks) has filled up.

  • Ramdisk: esx.problem.visorfs.ramdisk.full
  • VFAT: esx.problem.vfat.filesystem.full.other

When either of these occur, you can easily find them under the Monitor->Events section for an ESXi host as shown in the screenshot below.

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ESXi on ASUS PN64-E1

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There are not many small form factor kits out there right now that supports Thunderbolt 4, so I was really interested in what ASUS had to offer with their release of the PN64-E1.


I have actually never worked with an ASUS kit before, so I was definitely looking forward to getting my hands on one of this system and see what capabilities it can enable for the VMware community. I initially learned about this platform last year with their PN64, but in speaking with ASUS, they mentioned I should really check out their newest offering, the PN64-E1, which has several new enhancements over their previous model.

So here is your first look at the ASUS PN64-E1!

UPDATE (02/20/25) - 128GB (2x64GB) DDR5 SODIMM memory is fully functional with PN64-E1, please see this blog post for more information.

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