Hi Guy's
Small issue I have here, every 7days my Domain controllers (Server 2008r2) give up on me and will not authenticate users on the domain. when opening ADUC I get the following error:
"Naming information cannot be loacted for the following reason: The server is not operational
If you are trying to connect to a Domain Controller running Windows 200, verify that the Windows 2000 Server Service Pack 3 or later is installed on the DC, or use the Windows 2000 administration tools. For more information about connecting to DC's running 2000, see Help and Support"
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When I try to run a DCDIAG on the faulty server I get the following:
"Directory Server Diagnosis
Performing inital setup:
Trying to find home server...
Home Server = <servername>
Ldap search capability attribute search failed on server <servername>, return value = 81"
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The server can ping the other DC and can be pinged by the other DC. It can also resolve IP to name.
I have checked numerous site and all of the issues I have seen point to 2003 server. I have disabled all of the AV on the servers and when I have ran DNSLINT get the following:
"c:\Atos\dnslint>dnslint /ad /s localhost
DNSLint will attempt to verify the
DNS entries used in AD replication
Using 127.0.0.1 for LDAP
DNSLint will check if the local system can
resolve the CNAME and glue (A) records
used for Active Directory forest replication
using its locally configured DNS server(s)
This process may take several minutes to complete.........
LDAP query to speficied LDAP server on TCP port 389 failed
Server Down
LDAP query to speficied LDAP server on TCP port 389 failed
LDAP server specified appears to be down
Specify a different LDAP server and run the command again"
But I can telnet to the server on port 389.
This happens on both my Physical and Virtual DC, once I reboot the problem server it all works fine for 7 days then happens again.
Any thoughts would be appreciated.
Cheers
