We had to reboot our servers and had a little problem bringing up DNS and AD but they both came up and are running smoothly. Now clients (mostly Windows 7 and vista) can not connect to the nas by navigating there through explorer. I have narrowed it down to it not communicating with AD correctly. When i try to put my domain creds in the device tab i get "preauthentication failure" pop up. Any ideas on how to get around this? Any help would be much appreciated