This computer was not able to set up a secure session with a domain controller in domain DOMAINNAME

Posted on 2006-04-21
Last Modified: 2010-04-18
Hi There,

I have a server running Windows Server 2003 and SQL Server 2000. Each day I see an error from Netlogon in the system log as follows:

"This computer was not able to set up a secure session with a domain controller in domain DOMAINNAME due to the following:
The RPC server is unavailable.  
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.  

If this computer is a domain controller for the specified domain, it sets up the secure session to the primary domain controller emulator in the specified domain. Otherwise, this computer sets up the secure session to any domain controller in the specified domain.

For more information, see Help and Support Center at "

We notice that the application which the server hosts crashes out around the time this event is recorded. Does anyone know what might be and how to fix it? The machine is a member of a Windows NT 4 domain

Question by:invirl
    1 Comment
    LVL 11

    Accepted Solution

    Looks like it is something to do with DNS. You can verify that with the _ldap._tcp.dc........ nslookup query
    described in KB816587 ( . Do that on a from the NT4 machine looking for domainname SRV records.. and then vice versa. If you don't get "one or more SRV service location records " at either end then DNS needs fixing

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