vpxd service crashes and generates core dumps due to a restored vCLS VM

Products

• VMware vCenter Server

Issue/Introduction

The vCenter inventory is inaccessible and shows the below error:
"You have no privileges to view this object or it is deleted."

Environment

VMware vCenter Server 8.x

Cause

This issue occurs because the vCLS virtual machine was manually restored from a backup. vSphere Cluster Services require system-managed vCLS virtual machines as restored versions lack the necessary metadata and lifecycle integration required for automated cluster operations.

A vCLS virtual machine restored from a backup appears as a standard virtual machine, when compared to a system-managed vCLS instance as below:

Resolution

To re-provision the vCLS virtual machines, the below steps need to be followed.

Enable retreat mode to remove the existing vCLS VMs under affected cluster. 
vSphere 7.0 U3o/8.0 U2 and Later

• Log into vCenter's HTML5 client.
• Navigate to Hosts and Clusters and select the desired cluster.
• Click the Configure tab.
• Under the vSphere Cluster Services section, select General.ll
• Click EDIT VCLS MODE in the top-right corner.
• In the Edit vCLS Mode pop up window, click on the second radio option Retreat Mode.
• Click OK. The vCLS VMs will now be powered off and removed.

Disable Retreat mode to create vCLS VMs. 

• Log into vCenter's HTML5 client.
• Navigate to Hosts and Clusters and select the cluster.
• Click on the Configure tab.
• Under the vSphere Cluster Services section, select General.
• Click EDIT VCLS MODE in the top-right corner.
• In the Edit vCLS Mode pop up window, click on the second radio option System Managed.
• Click OK. The new vCLS VMs will now be deployed.