ESXi upgrade fails from 7.x to 8.x due to unsupported TPM version.

Products

• VMware Cloud Foundation
• VMware vSphere ESXi 8.0
• VMware vCenter Server 8.0

Issue/Introduction

• A similar error is reported in the vmware-updatemgr.log
  
  

  /var/log/vmware/vmware-updatemgr/vum-server/vmware-updatemgr.log
  
  ####-##-##T##:###:##.###Z info vmware-vum-server[10875] [Originator@6876 sub=HostUpgradeScanner] [scannerImpl 1757] (vmodl.LocalizableMessage) [
  -->    (vmodl.LocalizableMessage) {
  -->       key = "com.vmware.vcIntegrity.HostUpgrade.UnsupportedTPMVersion",
  -->       arg = <unset>,
  -->       message = <unset>
  -->    }
  --> ]

  
  
  
• The following error can be seen in the vCenter UI. 

         

Environment

• VMware Cloud Foundation 5.x
• VMware vSphere 8.x

Cause

• Starting in vSphere 8.x TPM 1.2 is deprecated.
• More details regarding TPM can be found here

Note:"Removal of Trusted Platform Module (TPM) 1.2: VMware discontinues support of TPM 1.2 and associated features such as TPM 1.2 with TXT. To get full use of vSphere features, you can use TPM 2.0 instead of TPM 1.2."

Resolution

1. Engage the hardware OEMs to upgrade the Trusted Platform Module on all affected hosts to a supported TPM version. (2.0 or higher)
2. Disabling the TPM is not going to help the upgrade if the ESXi host is installed while TPM device is present in the physical host and the TPM feature is enabled in the BIOS settings, the ESXi host will install with TPM enabled.
3. Once TPM is enabled on the ESXi host, disabling TPM is not possible., Refer  Need to disable Trusted Platform Module (TPM) on a TPM enabled ESXi host.