We use Deep Security 9. A ESXi 5.1 host was taken down in maintenance mode for a period of more then one week while we were waiting for an additional vRanger license for the host. After the license was received and everything taken care of in that matter, the host was taken out of maintenance mode. Soon it was obvious that the DSVA on the host was no longer functioning. After some troubleshooting it was deleted and we attempted to deploy a new DSVA on the host. This did not succeed. The error message stated that the DSVA could not register with the vShield Manager. vShield manager states that the host is not reachable. I can ping from the host to the vCenter and vShield Admin, I can ping from vShield admin and vCenter to the host. The host also looks fine in vCenter. I have restored the host in Deep Security Admin and booted it. I have rebootet the vShield Manager. I have re-synhronized vShield manager with the vCenter server. vShield admin stills shows the same state for the esx host, "Host not reachable."