A Global Catalog Server could not be located - All GC's are down
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To resolve this I ended up restoring the sysvol folder from a backup. I am not sure if this was the best way to fix it but it worked.
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Jase almost 2 years
I seem to be having a number of issues with our SBS. I believe this was originally domain was previously on a SBS 2003 box before being moved to this SBS 2011 box last year, it has been running fine until yesterday. I cant see anything that has changed then though.
Everything seems to point to DNS although I am struggling to pinpoint the actual cause. The most worrying is when I try to open something on the SBS such as AD sites and services.
//edit can't post images yet - the error is
Active Directory Domain Services - Naming information cannot be located because: The specified domain either does not exist or could not be contacted. Contact your system administrator to verify that your domain is properly configured and is currently online.
Here is the IPconfig from the server
Host Name . . . . . . . . . . . . : SBS2012 Primary Dns Suffix . . . . . . . : Contosso.local Node Type . . . . . . . . . . . . : Broadcast IP Routing Enabled. . . . . . . . : Yes WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : Contosso.local Ethernet adapter Local Area Connection 2: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Intel(R) 82575EB Gigabit Network Connecti on #2 Physical Address. . . . . . . . . : 00-1E-67-39-23-14 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Link-local IPv6 Address . . . . . : fe80::8087:34f0:59f9:6a26%12(Preferred) IPv4 Address. . . . . . . . . . . : 192.168.35.250(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 192.168.35.1 DHCPv6 IAID . . . . . . . . . . . : 301997671 DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-17-39-46-22-00-1E-67-39-23-15 DNS Servers . . . . . . . . . . . : 192.168.35.250 NetBIOS over Tcpip. . . . . . . . : Enabled PPP adapter RAS (Dial In) Interface: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : RAS (Dial In) Interface Physical Address. . . . . . . . . : DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes IPv4 Address. . . . . . . . . . . : 192.168.35.24(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.255 Default Gateway . . . . . . . . . : NetBIOS over Tcpip. . . . . . . . : Enabled Tunnel adapter isatap.{6E06F030-7526-11D2-BAF4-00600815A4BD}: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft ISATAP Adapter Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Tunnel adapter Teredo Tunneling Pseudo-Interface: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes Tunnel adapter isatap.{A23E95B8-B5C2-4D88-BDE9-E9F1C2DD3902}: Media State . . . . . . . . . . . : Media disconnected Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3 Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0 DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yesand here is the nltest
nltest /server:sbs2012 /dsgetdc:contosso.local DC: \\SBS2012.contosso.local Address: \\192.168.35.250 Dom Guid: c50b6df3-9d22-4c87-b2a7-adadc4fd5ec1 Dom Name: contosso.local Forest Name: contosso.local Dc Site Name: Default-First-Site-Name Our Site Name: Default-First-Site-Name Flags: PDC GC DS LDAP KDC TIMESERV GTIMESERV WRITABLE DNS_DC DNS_DOMAIN DNS_FOREST CLOSE_SITE FULL_SECRET WS The command completed successfullyAs far as I can see everything so far looks ok (highly possible I am missing something) but when I run a DCDIAG it gets messy
Directory Server Diagnosis Performing initial setup: Trying to find home server... Home Server = SBS2012 * Identified AD Forest. Done gathering initial info. Doing initial required tests Testing server: Default-First-Site-Name\SBS2012 Starting test: Connectivity ......................... SBS2012 passed test Connectivity Doing primary tests Testing server: Default-First-Site-Name\SBS2012 Starting test: Advertising Fatal Error:DsGetDcName (SBS2012) call failed, error 1355 The Locator could not find the server. ......................... SBS2012 failed test Advertising Starting test: FrsEvent There are warning or error events within the last 24 hours after the SYSVOL has been shared. Failing SYSVOL replication problems may cause Group Policy problems. ......................... SBS2012 passed test FrsEvent Starting test: DFSREvent ......................... SBS2012 passed test DFSREvent Starting test: SysVolCheck ......................... SBS2012 passed test SysVolCheck Starting test: KccEvent ......................... SBS2012 passed test KccEvent Starting test: KnowsOfRoleHolders ......................... SBS2012 passed test KnowsOfRoleHolders Starting test: MachineAccount ......................... SBS2012 passed test MachineAccount Starting test: NCSecDesc Error NT AUTHORITY\ENTERPRISE DOMAIN CONTROLLERS doesn't have Replicating Directory Changes In Filtered Set access rights for the naming context: DC=DomainDnsZones,DC=Contosso,DC=local Error NT AUTHORITY\ENTERPRISE DOMAIN CONTROLLERS doesn't have Replicating Directory Changes In Filtered Set access rights for the naming context: DC=ForestDnsZones,DC=Contosso,DC=local ......................... SBS2012 failed test NCSecDesc Starting test: NetLogons Unable to connect to the NETLOGON share! (\\SBS2012\netlogon) [SBS2012] An net use or LsaPolicy operation failed with error 67, The network name cannot be found.. ......................... SBS2012 failed test NetLogons Starting test: ObjectsReplicated ......................... SBS2012 passed test ObjectsReplicated Starting test: Replications [Replications Check,SBS2012] DsReplicaGetInfo(PENDING_OPS, NULL) failed, error 0x2105 "Replication access was denied." ......................... SBS2012 failed test Replications Starting test: RidManager ......................... SBS2012 passed test RidManager Starting test: Services Could not open NTDS Service on SBS2012, error 0x5 "Access is denied." ......................... SBS2012 failed test Services Starting test: SystemLog An error event occurred. EventID: 0x0000041E Time Generated: 07/12/2013 08:27:32 Event String: The processing of Group Policy failed. Windows could not obtain the name of a domain controller. This could be caused by a name resolution failure. Verify your Domain Name System (DNS) is configured and working correctly. An error event occurred. EventID: 0x0000041E Time Generated: 07/12/2013 08:32:32 Event String: The processing of Group Policy failed. Windows could not obtain the name of a domain controller. This could be caused by a name resolution failure. Verify your Domain Name System (DNS) is configured and working correctly. An error event occurred. EventID: 0x0000041E Time Generated: 07/12/2013 08:37:32 Event String: The processing of Group Policy failed. Windows could not obtain the name of a domain controller. This could be caused by a name resolution failure. Verify your Domain Name System (DNS) is configured and working correctly. An error event occurred. EventID: 0x0000041E Time Generated: 07/12/2013 08:42:32 Event String: The processing of Group Policy failed. Windows could not obtain the name of a domain controller. This could be caused by a name resolution failure. Verify your Domain Name System (DNS) is configured and working correctly. An error event occurred. EventID: 0x0000041E Time Generated: 07/12/2013 08:47:32 Event String: The processing of Group Policy failed. Windows could not obtain the name of a domain controller. This could be caused by a name resolution failure. Verify your Domain Name System (DNS) is configured and working correctly. An error event occurred. EventID: 0x0000041E Time Generated: 07/12/2013 08:52:32 Event String: The processing of Group Policy failed. Windows could not obtain the name of a domain controller. This could be caused by a name resolution failure. Verify your Domain Name System (DNS) is configured and working correctly. An error event occurred. EventID: 0x00000457 Time Generated: 07/12/2013 08:54:09 Event String: Driver EPSON WorkForce 645 Series required for printer EPSON WorkForce 645 Series is unknown. Contact the administrator to install the driver before you log in again. An error event occurred. EventID: 0x00000457 Time Generated: 07/12/2013 08:54:10 Event String: Driver FX DocuCentre-IV C2270 PCL 6 required for printer scanner - 212 Manukau Rd Epsom is unknown. Contact the administrator to install the driver before you log in again. An error event occurred. EventID: 0x00000457 Time Generated: 07/12/2013 08:54:10 Event String: Driver HP ePrint required for printer HP ePrint is unknown. Contact the administrator to install the driver before you log in again. An error event occurred. EventID: 0x00000457 Time Generated: 07/12/2013 08:54:11 Event String: Driver PDF Complete Converter required for printer PDF Complete is unknown. Contact the administrator to install the driver before you log in again. An error event occurred. EventID: 0x00000457 Time Generated: 07/12/2013 08:54:14 Event String: Driver Send To Microsoft OneNote 2010 Driver required for printer Send To OneNote 2010 is unknown. Contact the administrator to install the driver before you log in again. An error event occurred. EventID: 0x0000041E Time Generated: 07/12/2013 08:57:32 Event String: The processing of Group Policy failed. Windows could not obtain the name of a domain controller. This could be caused by a name resolution failure. Verify your Domain Name System (DNS) is configured and working correctly. An error event occurred. EventID: 0x0000041E Time Generated: 07/12/2013 09:02:33 Event String: The processing of Group Policy failed. Windows could not obtain the name of a domain controller. This could be caused by a name resolution failure. Verify your Domain Name System (DNS) is configured and working correctly. A warning event occurred. EventID: 0x00002724 Time Generated: 07/12/2013 09:03:32 Event String: This computer has at least one dynamically assigned IPv6 address.For reliable DHCPv6 server operation, you should use only static IPv6 addresses. An error event occurred. EventID: 0x0000041A Time Generated: 07/12/2013 09:03:33 Event String: The DHCP/BINL service on the local machine encountered a network error. The error was: 0x 2. An error event occurred. EventID: 0x0000041E Time Generated: 07/12/2013 09:03:33 Event String: The DHCP/BINL service on this computer is shutting down. See the previous event log messages for reasons. An error event occurred. EventID: 0xC0002720 Time Generated: 07/12/2013 09:03:45 Event String: The machine-default permission settings do not grant Local Activation permission for the COM Server application with CLSID An error event occurred. EventID: 0xC0002720 Time Generated: 07/12/2013 09:03:46 Event String: The machine-default permission settings do not grant Local Activation permission for the COM Server application with CLSID An error event occurred. EventID: 0xC0002720 Time Generated: 07/12/2013 09:03:46 Event String: The machine-default permission settings do not grant Local Activation permission for the COM Server application with CLSID An error event occurred. EventID: 0xC0002720 Time Generated: 07/12/2013 09:03:46 Event String: The machine-default permission settings do not grant Local Activation permission for the COM Server application with CLSID An error event occurred. EventID: 0xC0002720 Time Generated: 07/12/2013 09:03:46 Event String: The machine-default permission settings do not grant Local Activation permission for the COM Server application with CLSID An error event occurred. EventID: 0x00000406 Time Generated: 07/12/2013 09:07:33 Event String: The processing of Group Policy failed. Windows attempted to retrieve new Group Policy settings for this user or computer. Look in the details tab for error code and description. Windows will automatically retry this operation at the next refresh cycle. Computers joined to the domain must have proper name resolution and network connectivity to a domain controller for discovery of new Group Policy objects and settings. An event will be logged when Group Policy is successful. An error event occurred. EventID: 0x00000406 Time Generated: 07/12/2013 09:12:34 Event String: The processing of Group Policy failed. Windows attempted to retrieve new Group Policy settings for this user or computer. Look in the details tab for error code and description. Windows will automatically retry this operation at the next refresh cycle. Computers joined to the domain must have proper name resolution and network connectivity to a domain controller for discovery of new Group Policy objects and settings. An event will be logged when Group Policy is successful. An error event occurred. EventID: 0xC00038D6 Time Generated: 07/12/2013 09:16:24 Event String: The DFS Namespace service could not initialize cross forest trust information on this domain controller, but it will periodically retry the operation. The return code is in the record data. An error event occurred. EventID: 0x0000041E Time Generated: 07/12/2013 09:17:34 Event String: The processing of Group Policy failed. Windows could not obtain the name of a domain controller. This could be caused by a name resolution failure. Verify your Domain Name System (DNS) is configured and working correctly. An error event occurred. EventID: 0x0000041E Time Generated: 07/12/2013 09:22:34 Event String: The processing of Group Policy failed. Windows could not obtain the name of a domain controller. This could be caused by a name resolution failure. Verify your Domain Name System (DNS) is configured and working correctly. ......................... SBS2012 failed test SystemLog Starting test: VerifyReferences ......................... SBS2012 passed test VerifyReferences Running partition tests on : DomainDnsZones Starting test: CheckSDRefDom ......................... DomainDnsZones passed test CheckSDRefDom Starting test: CrossRefValidation ......................... DomainDnsZones passed test CrossRefValidation Running partition tests on : ForestDnsZones Starting test: CheckSDRefDom ......................... ForestDnsZones passed test CheckSDRefDom Starting test: CrossRefValidation ......................... ForestDnsZones passed test CrossRefValidation Running partition tests on : Schema Starting test: CheckSDRefDom ......................... Schema passed test CheckSDRefDom Starting test: CrossRefValidation ......................... Schema passed test CrossRefValidation Running partition tests on : Configuration Starting test: CheckSDRefDom ......................... Configuration passed test CheckSDRefDom Starting test: CrossRefValidation ......................... Configuration passed test CrossRefValidation Running partition tests on : Contosso Starting test: CheckSDRefDom ......................... Contosso passed test CheckSDRefDom Starting test: CrossRefValidation ......................... Contosso passed test CrossRefValidation Running enterprise tests on : Contosso.local Starting test: LocatorCheck Warning: DcGetDcName(GC_SERVER_REQUIRED) call failed, error 1355 A Global Catalog Server could not be located - All GC's are down. Warning: DcGetDcName(TIME_SERVER) call failed, error 1355 A Time Server could not be located. The server holding the PDC role is down. Warning: DcGetDcName(GOOD_TIME_SERVER_PREFERRED) call failed, error 1355 A Good Time Server could not be located. Warning: DcGetDcName(KDC_REQUIRED) call failed, error 1355 A KDC could not be located - All the KDCs are down. ......................... Contosso.local failed test LocatorCheck Starting test: Intersite ......................... Contosso.local passed test IntersiteAnyone have any ideas? Thanks
Here is the _msdcs.contosso.local forwarder entry
Name,Type,Data,Timestamp dc,,, domains,,, gc,,, pdc,,, (same as parent folder),Start of Authority (SOA),[88], sbs2012.Contosso.local., hostmaster.,static (same as parent folder),Name Server (NS),sbs2012.Contosso.local.,static c0074617-7e4a-4ed4-937d-67d38780d11c,Alias (CNAME),sbs2012.Contosso.local.,?12/?07/?2013 2:00:00 a.m.-
Spence almost 11 yearsDo you see any "Automatic" start services that are either not running or "Paused"? I'm feeling like you've got a service not started that is preventing the machine from advertising itself as a DC. Did this start immediately after a reboot? What does the System Event Log have to say around the time that the problems started?
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Jase almost 11 yearsI do have a couple of services that are not starting one is the DHCP server which stopped since this problem has occurred and wont restart... I am assuming that this will sort itself out once I fix the cause. Also the "Microsoft Exchange system attendant" service is not starting.
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Jase almost 11 yearsNo reboot, or updates... Netlogon service is running (and set to automatic), it was one of things I checked as had seen others who had had an issue with it becoming paused or stopped all of a sudden. going through the logs again it looks ok then all of a sudden here is an error logged by group policy "The processing of Group Policy failed. Windows could not obtain the name of a domain controller. This could be caused by a name resolution failure. Verify your Domain Name System (DNS) is configured and working correctly." event ID 1054
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Spence almost 11 yearsDoes the view in the DNS Management Console look normal? You're seeing your _msdcs.contoso.local forward lookup zone and it appears to be populated normally?
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Jase almost 11 yearsThanks for the help so far Evan, I added the forward lookupzone above. One thing I did find when troubleshooting was a non-existant server listed in 'forward lookup zones'>>contosso.local>>_msdcs which I changed to the FQDN and IP of the SBS (should I have just deleted it and let the SBS rebuid it?)
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Spence almost 11 yearsYou should let Windows handle the "_msdcs.contoso.local" zone. If the zone was missing your best bet would be to stop/restart the "Netlogon" service, which will cause the zone to be rebuilt.
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Jase almost 11 yearsthe zone is there I simply edited one of the name servers listed in forward lookupzones>>contosso.local>>_msdcs . but I did restart netlogon again to see if anything new was created but it doesn't seem to make any changes
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