A new Windows 7 Pro client recently added to SBS 2011 domain. This client loses internet connectivity shortly after 4:00 pm daily but recovers the connection after 20-30 minutes. Outlook connection to internal Exchange Server also fails during this interval. No problem has been reported with any of the other client machines.
The following error is logged on the client at 4:00 pm every day and at 4:00 am on most days.
Error 19/05/2013 4:01:38 PM NETLOGON 5719 None "This computer was not able to set up a secure session with a domain controller in domain ADE due to the following:
There are currently no logon servers available to service the logon request.
This may lead to authentication problems. Make sure that this computer is connected to the network. If the problem persists, please contact your domain administrator.