Monday, October 4, 2010

Cannot complete the configuration of the HA agent on the host. Unable to contact a primary HA agent.

I don't like this error. It means that vCenter pushed config to ESXi, but ESXi didn't provide acknowledgement in time.

If an individual host is having a HA configuration error, simply right-click on that host and click Reconfigure for VMware HA. However, if the error is appearing on every host in your cluster, disable VMware HA on the cluster then and reenable it. Once you've done that, right-click on each host and click Reconfigure for VMware HA. There, done.

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