[VMC on AWS] vSphere HA agent is in the uninitialized state

Products

• VMware Cloud on AWS

Issue/Introduction

One or more hosts in a VMC on AWS cluster report that HA is uninitialized. 
All virtual machines have been migrated off of the host(s). 
Virtual machines cannot be migrated to the host(s). 
In this state, the host(s) is not usable. 

Environment

VMC on AWS

Cause

This issue can be caused by multiple reasons. 
These are some the more common reasons for HA to go uninitialized on a host in VMC on AWS:

• A certificate refresh from SHA1 to SHA256
• A host was briefly marked as disconnected
• The host agent on the host was briefly inaccessible
• A recent manual host removal or addition to the cluster was completed
• An automated remediation task was completed on a host in the cluster

Resolution

The VMC on AWS team will need to reconfigure HA at the cluster level to resolve this issue. 
Please open a ticket with the VMC on AWS team: Get Support
When opening these types of tickets, please include:

• Organization ID
• SDDC ID
• Cluster name

Once HA has been reconfigured for the cluster, the VMC on AWS team will follow up to confirm completion. 

Additional Information

vSphere HA Agent is in the Uninitialized State