Issues like this are usually due to non-working name resolution, i.e. the vCenter Server cannot resolve the host's DNS name and vice versa (see e.g. http://kb.vmware.com/kb/1003735).
André
Issues like this are usually due to non-working name resolution, i.e. the vCenter Server cannot resolve the host's DNS name and vice versa (see e.g. http://kb.vmware.com/kb/1003735).
André