vCenter Authentication Proxy (VCAM) Firstboot Failed when migrating vCenter Server Appliance 6.7

Products

• VMware vCenter Server

Issue/Introduction

To learn more about firstboot issues see: Understanding and Troubleshooting vCenter Server and vCenter Server Appliance 6.7 Firstboot Install/Deployment, Upgrade, or Migration Failures​.
To collect a log bundle or review log files for a vCenter Server Appliance install, upgrade, or migration issues reference Triaging a vCenter Server Appliance 6.0 installation, upgrade, or migration (6.0 U2m) failure. The relevant logs will be on the newly deployed appliance.  

• In the firstbootStatus.json file, you see the error:

"failedSteps": "vmcam-firstboot"

 

• In the vmcam-firstboot.py_####_stderr.log file, you see the entry similar to:

Exception: Could not register as vCenter extension

Note: 

• vCenter Server Appliance - Firstboot logs are located in the /var/log/firstboot directory.

Environment

VMware vCenter Server Appliance 6.7.x

Cause

This issue occurs when VMware Authentication Proxy service is started in vCenter Server 6.5 during the upgrade.

Resolution

Stop the VMware Authentication Proxy service before migrating to the vCenter Server Appliance 6.7.