n this blog, we’ll explore why 0x80280009 (aka TPM_E_FAIL) is becoming a more common headache, particularly in virtual machines. We’ll look at what’s really going on inside the TPM when this error hits, why your Hyper-V VMs aren’t playing nice with Autopilot for pre-provisioned deployments, and, just maybe, how a new feature on the horizon, VTpmAttestation, might change the attestation game.