Troubleshooting an ESXi host in a "not responding" state ...
kb.vmware.com › s › articleApr 06, 2021 · This article provides steps to troubleshoot when an ESXi is in disconnected or a not responding state in vCenter Server. In addition, it provides steps to help you eliminate common causes for your problem by verifying that the configuration of your networking and management server agents is correct and confirm the availability of resources on your ESXi host.