I don't know my way round servers and networks at all except to set up a new user so I think I may be in too deep here. We use an external IT support person but are in the process of getting someone new at the moment.
Selected output of the two diagnostic reports you suggested I look at are shown below. If you can tell anything from this and have the time and the patience to give me basic instructions on how to proceed I'd appreciate the help. If the situation is too complicated then I better leave it to someone more qualified. We hope to have a new IT support person soon. The network seems to be functioning OK except for our backup failing when trying to backup system settings. The backup log file is what alerted me to the fact there was something wrong with the Active Directory. I've stopped trying to backup system settings in the meantime.
Our server is called "server" and I've made our domain name anonymous as "co_name.co.uk".
The line below from the DCDIAG output looks strange to my inexperienced eye in the that it breaks the Domain Controller name down into separate parts ie. "DC=co_name,DC=co,DC=uk". Is this normal?
"siteCN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=co_name,DC=co,DC=uk, error code 7, and internal id f08028f."
Thanks for your previous help and anything else you can suggest.
DCDIAG Output
-------------
Domain Controller Diagnosis
Performing initial setup:
* Verifying that the local machine server, is a DC.
* Connecting to directory service on server server.
* Collecting site info.
* Identifying all servers.
* Found 1 DC(s). Testing 1 of them.
Done gathering initial info.
Doing initial required tests
....
Starting test: Advertising
Fatal Error

sGetDcName (SERVER) call failed, error 1355
The Locator could not find the server.
......................... SERVER failed test Advertising
....
Starting test: Services
* Checking Service: Dnscache
* Checking Service: NtFrs
NtFrs Service is stopped on [SERVER]
* Checking Service: IsmServ
* Checking Service: kdc
* Checking Service: SamSs
* Checking Service: LanmanServer
* Checking Service: LanmanWorkstation
* Checking Service: RpcSs
* Checking Service: RPCLOCATOR
* Checking Service: w32time
* Checking Service: TrkWks
* Checking Service: TrkSvr
* Checking Service: NETLOGON
* Checking Service: Dnscache
* Checking Service: NtFrs
......................... SERVER failed test Services
....
Starting test: kccevent
* The KCC Event log test
An Error Event occured. EventID: 0xC000046A
Time Generated: 06/24/2004 10:29:35
Event String: The automatic topology generator was unable tocomplete the topology for siteCN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=co_name,DC=co,DC=uk, error code 7, and internal id f08028f.
......................... SERVER failed test kccevent
Starting test: systemlog
* The System Event log test
An Error Event occured. EventID: 0x000003F6
Time Generated: 06/24/2004 10:40:44
Event String: The JET Database call returned the followingerror : -510. Additional Debug Information:JetBackupToNULL.
An Error Event occured. EventID: 0x000003F8
Time Generated: 06/24/2004 10:40:44
Event String: The DHCP service encountered the following errorwhen backing up the database: An error occurred while accessing the DHCP database. Look at theDHCP server event log for more information on this error.
......................... SERVER failed test systemlog
....
Starting test: FsmoCheck
Warning: DcGetDcName(GC_SERVER_REQUIRED) call failed, error 1355
A Global Catalog Server could not be located - All GC's are down.
Warning: DcGetDcName(PDC_REQUIRED) call failed, error 1355
A Primary Domain Controller could not be located.
The server holding the PDC role is down.
Warning: DcGetDcName(TIME_SERVER) call failed, error 1355
A Time Server could not be located.
The server holding the PDC role is down.
Preferred Time Server Name: \\server.co_name.co.uk
Locator Flags: 0xe00001e5
Warning: DcGetDcName(KDC_REQUIRED) call failed, error 1355
A KDC could not be located - All the KDCs are down.
......................... co_name.co.uk failed test FsmoCheck
netdiag output
--------------
Opening \Device\NwlnkIpx failed
....
Testing the WINS server
Local Area Connection
There is no primary WINS server defined for this adapter.
There is no secondary WINS server defined for this adapter.
Gathering Winsock information.
Testing DNS
The DNS registration for server.co_name.co.uk is correct on all DNS servers
PASS - All the DNS entries for DC are registered on DNS server '192.168.4.20'.
....
Computer Name: SERVER
DNS Host Name: server.co_name.co.uk
DNS Domain Name: co_name.co.uk
System info : Windows 2000 Server (Build 2195)
Processor : x86 Family 6 Model 11 Stepping 1, GenuineIntel
....
No remote names have been found.
WINS service test. . . . . : Skipped
There is no primary WINS server defined for this adapter.
There is no secondary WINS server defined for this adapter.
There are no WINS servers configured for this interface.
IPX test : IPX is not installed on this machine.
....
Domain membership test . . . . . . : Passed
Machine is a . . . . . . . . . : Primary Domain Controller Emulator
Netbios Domain name. . . . . . : CO_NAME
Dns domain name. . . . . . . . : co_name.co.uk
Dns forest name. . . . . . . . : co_name.co.uk
Domain Guid. . . . . . . . . . : {905333E4-6288-4CF7-9EB9-A52DF708E7B5}
Domain Sid . . . . . . . . . . : S-1-5-21-1960408961-920026266-854245398
Logon User . . . . . . . . . . : administrator
Logon Domain . . . . . . . . . : CO_NAME
....
Autonet address test . . . . . . . : Passed
PASS - you have at least one non-autoconfigured IP address
....
DC discovery test. . . . . . . . . : Passed
Find DC in domain 'CO_NAME':
Found this DC in domain 'CO_NAME':
DC. . . . . . . . . . . : \\server.co_name.co.uk
Address . . . . . . . . : \\192.168.4.20
Domain Guid . . . . . . : {905333E4-6288-4CF7-9EB9-A52DF708E7B5}
Domain Name . . . . . . : co_name.co.uk
Forest Name . . . . . . : co_name.co.uk
DC Site Name. . . . . . : Default-First-Site-Name
Our Site Name . . . . . : Default-First-Site-Name
Flags . . . . . . . . . : PDC GC KDC TIMESERV WRITABLE DNS_DC DNS_DOMAIN DNS_FOREST CLOSE_SITE
Find PDC emulator in domain 'CO_NAME':
Found this PDC emulator in domain 'CO_NAME':
DC. . . . . . . . . . . : \\server.co_name.co.uk
Address . . . . . . . . : \\192.168.4.20
Domain Guid . . . . . . : {905333E4-6288-4CF7-9EB9-A52DF708E7B5}
Domain Name . . . . . . : co_name.co.uk
Forest Name . . . . . . : co_name.co.uk
DC Site Name. . . . . . : Default-First-Site-Name
Our Site Name . . . . . : Default-First-Site-Name
Flags . . . . . . . . . : PDC GC KDC TIMESERV WRITABLE DNS_DC DNS_DOMAIN DNS_FOREST CLOSE_SITE
Find Windows 2000 DC in domain 'CO_NAME':
[WARNING] Cannot find Windows 2000 DC in domain 'CO_NAME'. [ERROR_NO_SUCH_DOMAIN]
This isn't a problem if domain 'CO_NAME' does not have any Windows 2000 DCs.
....
Trust relationship test. . . . . . : Skipped
....
LDAP test. . . . . . . . . . . . . : Passed
DC '\\server.co_name.co.uk' isn't running the DS. Cannot test LDAP.
....
Do Negotiate authenticated LDAP call to 'server.co_name.co.uk'.
Found 1 entries:
....
[WARNING] Failed to query SPN registration on DC 'server.co_name.co.uk'.
....
IP Security test . . . . . . . . . : Passed
IPSec policy service is active, but no policy is assigned.
There are 0 filters
The command completed successfully