vSphere 4.1 Unable to access the console for VMs

Issue: The host has a yellow error symbol on it. when customer tries to access the service console for the VMs inside the hosts he gets the error message
|unable to connect to the MKS: vim.fault.InvalidLogin|
Resolution: KB Article: 1004837
customer did not have a cluster.
Restarted the VMware management agents.
Issue Resolved.