VCSA Update Fails with error : "Update installation failed, vCenter is non-operational"

  Symptoms

VCSA Update Fails with error : "Update installation failed, vCenter is non-operational"

Cause

This issue occurs when the software_update_state.conf has the following state.

Resolution

• Take SSH to vCenter Appliance
• Stop applmgmt service : service-control --stop applmgmt
• Navigate to /etc/applmgmt/appliance : cd /etc/applmgmt/appliance
• Backup the file : mv software_update_state.conf /var/tmp/software_update_state.conf.orig
• Start applmgmt service : service-control --start applmgmt
• Refresh VAMI, login and try the update again