ESXi 8.0 alarm TPM 2.0 alarm

Products

• VMware vSphere ESXi 8.0

Issue/Introduction

After upgrading to ESXi 8.0 TPM 2.0 alarm is triggered.

• Alarm: “TPM 2.0 device detected but a connection cannot be established.”

Environment

ESXi 8.0

Cause

vSphere does not support SHA1 security algorithm. The algorithm for TPM 2.0 must be SHA2 ("SHA256") or higher.

- Dell PowerEdge T150 (and possibly other server hardware) is configured with TPM 2.0 using SHA1 algorithm as default.

Resolution

Customer must follow hardware vendor specific instructions to change the default TPM 2.0 algorithm from SHA1 to at least SHA2 ("SHA256").

• Example: Dell PowerEdge T150 > Boot to BIOS > System BIOS Settings > System Security > TPM Advanced Settings
  • NOTE: BIOS configurations and steps may very by vendor.