After deployment of update (from to to all devices in the zone, AdaptiveClients on the workstations, which already have recieved can not login to the zone any more. Before the update the same PCs with could authenticate users without any problem. There is no popup from ZEN agent during the windows logon process. Trying to right click over the blue "Z" and say "log on" brings nothing - neither logon dialog nor error. Anyway there is one laptop, which can log on user while having installed on it.The server itself has as well and client on it can log in the user.