asked on

DNS problem Windows 2008

I believe I am having a big DNS problem with my Windows 2008 domain. I have had several computers receive this logon error "Windows cannot connect to the domain, either the domain controller is down or otherwise unavailable."

Also I tried to map a drive to the domain controller \\domaincontroller\mis and received "The mapped network drive could not be created because the following has occurred: The target account name is incorrect." I can map the drive if I use the IP address.

If I do a tracert to the name it comes up correct

Darius Ghassem

Run dcdiag /test:dns post results.

Make sure you are only pointing to internal DNS servers

meko72

Is your DNS server properly configured? Is your DHCP server properly configured to assign the DNS server? This could happen from time to time if you decide to take a shortcut (an honest but deadly mistake) and assign your users an external DNS server as your primary DNS Server.Also Make sure your server is pointing to itself for DNS

jtennyson

ASKER

Here it is and it does not look good

Running enterprise tests on : corp.rgrayclamps.com
Starting test: DNS
Test results for domain controllers:

DC: RGRAYDC1.corp.rgrayclamps.com
Domain: corp.rgrayclamps.com

TEST: Basic (Basc)
Warning: adapter [00000014] BASP Virtual Adapter has invalid DNS server: 12.127.17.71 (<name unavailable>)
Warning: The AAAA record for this DC was not found

TEST: Dynamic update (Dyn)
Warning: Failed to delete the test record _dcdiag_test_record in zone corp.rgrayclamps.com

TEST: Records registration (RReg)
Network Adapter [00000014] BASP Virtual Adapter:
Warning:
Missing AAAA record at DNS server 10.153.49.248:
RGRAYDC1.corp.rgrayclamps.com

Warning:
Missing AAAA record at DNS server 10.153.49.248:
gc._msdcs.corp.rgrayclamps.com

Warning:
Missing AAAA record at DNS server 10.153.49.101:
RGRAYDC1.corp.rgrayclamps.com

Warning:
Missing AAAA record at DNS server 10.153.49.101:
gc._msdcs.corp.rgrayclamps.com

Warning:
Missing CNAME record at DNS server 12.127.17.71:
874c0df6-a9fe-4d14-ae99-b75c091ed5b9._msdcs.corp.rgrayclamps.com

Warning:
Missing A record at DNS server 12.127.17.71:
RGRAYDC1.corp.rgrayclamps.com

Warning:
Missing AAAA record at DNS server 12.127.17.71:
RGRAYDC1.corp.rgrayclamps.com

Error:
Missing SRV record at DNS server 12.127.17.71:
_ldap._tcp.corp.rgrayclamps.com

Error:
Missing SRV record at DNS server 12.127.17.71:
_ldap._tcp.6a97ac25-2b24-4fa1-bee9-d891701ab4e8.domains._msdcs.corp.rgrayclamps.com

Error:
Missing SRV record at DNS server 12.127.17.71:
_kerberos._tcp.dc._msdcs.corp.rgrayclamps.com

Error:
Missing SRV record at DNS server 12.127.17.71:
_ldap._tcp.dc._msdcs.corp.rgrayclamps.com

Error:
Missing SRV record at DNS server 12.127.17.71:
_kerberos._tcp.corp.rgrayclamps.com

Error:
Missing SRV record at DNS server 12.127.17.71:
_kerberos._udp.corp.rgrayclamps.com

Error:
Missing SRV record at DNS server 12.127.17.71:
_kpasswd._tcp.corp.rgrayclamps.com

Error:
Missing SRV record at DNS server 12.127.17.71:
_ldap._tcp.Default-First-Site-Name._sites.corp.rgrayclamps.com

Error:
Missing SRV record at DNS server 12.127.17.71:
_kerberos._tcp.Default-First-Site-Name._sites.dc._msdcs.corp.rgrayclamps.com

Error:
Missing SRV record at DNS server 12.127.17.71:
_ldap._tcp.Default-First-Site-Name._sites.dc._msdcs.corp.rgrayclamps.com

Error:
Missing SRV record at DNS server 12.127.17.71:
_kerberos._tcp.Default-First-Site-Name._sites.corp.rgrayclamps.com

Error:
Missing SRV record at DNS server 12.127.17.71:
_ldap._tcp.gc._msdcs.corp.rgrayclamps.com

Warning:
Missing A record at DNS server 12.127.17.71:
gc._msdcs.corp.rgrayclamps.com

Warning:
Missing AAAA record at DNS server 12.127.17.71:
gc._msdcs.corp.rgrayclamps.com

Error:
Missing SRV record at DNS server 12.127.17.71:
_gc._tcp.Default-First-Site-Name._sites.corp.rgrayclamps.com

Error:
Missing SRV record at DNS server 12.127.17.71:
_ldap._tcp.Default-First-Site-Name._sites.gc._msdcs.corp.rgrayclamps.com

Error:
Missing SRV record at DNS server 12.127.17.71:
_ldap._tcp.pdc._msdcs.corp.rgrayclamps.com

Warning:
Missing AAAA record at DNS server 10.153.49.101:
RGRAYDC1.corp.rgrayclamps.com

Warning:
Missing AAAA record at DNS server 10.153.49.101:
gc._msdcs.corp.rgrayclamps.com

Warning:
Missing AAAA record at DNS server 10.153.49.248:
RGRAYDC1.corp.rgrayclamps.com

Warning:
Missing AAAA record at DNS server 10.153.49.248:
gc._msdcs.corp.rgrayclamps.com

Error: Record registrations cannot be found for all the network adapters

Summary of test results for DNS servers used by the above domain controllers:

DNS server: 12.127.17.71 (<name unavailable>)
1 test failure on this DNS server
Name resolution is not functional. _ldap._tcp.corp.rgrayclamps.com. failed on the DNS server 12.127.17.71

Summary of DNS test results:

Auth Basc Forw Del Dyn RReg Ext
_________________________________________________________________
Domain: corp.rgrayclamps.com
RGRAYDC1 PASS WARN PASS PASS WARN FAIL n/a

......................... corp.rgrayclamps.com failed test DNS

iamshergill

Please let me know the followings:

- How many DCs you have.
- Run IPCONFIG command and paste its result.

jtennyson

ASKER

I have 2 DCs

Ethernet adapter Bond0 Segment 10 VLAN 20:

Connection-specific DNS Suffix . : corp.rgrayclamps.com
IPv4 Address. . . . . . . . . . . : 10.153.49.248
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 10.153.49.5

Tunnel adapter Local Area Connection* 12:

Connection-specific DNS Suffix . : corp.rgrayclamps.com
Link-local IPv6 Address . . . . . : fe80::5efe:10.153.49.248%14
Default Gateway . . . . . . . . . :

Ethernet adapter Bond0 Segment 10 VLAN 20:

Connection-specific DNS Suffix . :
IPv4 Address. . . . . . . . . . . : 10.153.49.101
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 10.153.49.5

Tunnel adapter Local Area Connection* 11:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

iamshergill

I am sorry I did not mention that I need result of IPCONFIG /ALL and please paste results from both DCs

Darius Ghassem

Well you don't have DNS servers listed in the TCP\IP properties or you didn't run ipconfig /all

Darius Ghassem

If you are not running exchange on these servers disable IPv6.

http://www.windowsreference.com/networking/disable-ipv6-in-windows-server-20008-full-core-installation/

Make sure you don't have any external DNS servers listed in your TCP\IP properties you should only have internal DNS\DCs listed as we DNS servers in your TCP\IP propertes

Once you have done the above run ipconfig /flushdns, ipconfig /registerdns, and dcdiag /fix

iamshergill

There is no need of keeping IPv6 but directly disabling IPv6 is not safe. First need to understand network configuration then will suggest to disable IPv6 with specific process.

jtennyson

ASKER

Windows IP Configuration

Host Name . . . . . . . . . . . . : RGRAYBG01
Primary Dns Suffix . . . . . . . : corp.rgrayclamps.com
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : corp.rgrayclamps.com
rgrayclamps.com

Ethernet adapter Bond0 Segment 10 VLAN 20:

Windows IP Configuration

Host Name . . . . . . . . . . . . : RGRAYDC1
Primary Dns Suffix . . . . . . . : corp.rgrayclamps.com
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : corp.rgrayclamps.com
rgrayclamps.com

Ethernet adapter Bond0 Segment 10 VLAN 20:

Connection-specific DNS Suffix . : corp.rgrayclamps.com
Description . . . . . . . . . . . : BASP Virtual Adapter #2
Physical Address. . . . . . . . . : 00-1A-64-F4-2C-10
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 10.153.49.248(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 10.153.49.5
DNS Servers . . . . . . . . . . . : 10.153.49.248
10.153.49.101
12.127.17.71
10.153.49.101
127.0.0.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter Local Area Connection* 12:

Connection-specific DNS Suffix . : corp.rgrayclamps.com
Description . . . . . . . . . . . : isatap.corp.rgrayclamps.com
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::5efe:10.153.49.248%14(Preferred)
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 10.153.49.248
10.153.49.101
12.127.17.71
10.153.49.101
127.0.0.1
NetBIOS over Tcpip. . . . . . . . : Disabled

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : BASP Virtual Adapter
Physical Address. . . . . . . . . : 00-1A-64-F4-10-2C
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 10.153.49.101(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 10.153.49.5
DNS Servers . . . . . . . . . . . : 10.153.49.248
10.153.49.101
127.0.0.1
NetBIOS over Tcpip. . . . . . . . : Enabled

iamshergill

I think during "paste" IP Config result, you mixed up both. Not able to understand which record belongs to which host. Please try again.

Darius Ghassem

Remove external DNS servers.

Second is this DNS server multihomed?

You should not have a DC\DNS servers multihomed

http://technet.microsoft.com/en-us/library/cc740071(WS.10).aspx

meko72

why is the local loop back (127.0.0.1) in the there??????

iamshergill

Please do not remove anything until show me IPCONFIG/All results from both servers.

jtennyson

ASKER

This is the main DC. I found and removed the 12.127.17.71

Windows IP Configuration

Host Name . . . . . . . . . . . . : RGRAYDC1
Primary Dns Suffix . . . . . . . : corp.rgrayclamps.com
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : corp.rgrayclamps.com
rgrayclamps.com

Ethernet adapter Bond0 Segment 10 VLAN 20:

Connection-specific DNS Suffix . : corp.rgrayclamps.com
Description . . . . . . . . . . . : BASP Virtual Adapter #2
Physical Address. . . . . . . . . : 00-1A-64-F4-2C-10
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 10.153.49.248(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 10.153.49.5
DNS Servers . . . . . . . . . . . : 10.153.49.248
10.153.49.101
127.0.0.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter Local Area Connection* 12:

Connection-specific DNS Suffix . : corp.rgrayclamps.com
Description . . . . . . . . . . . : isatap.corp.rgrayclamps.com
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::5efe:10.153.49.248%14(Preferred)
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 10.153.49.248
10.153.49.101
127.0.0.1
NetBIOS over Tcpip. . . . . . . . : Disabled

This is the secondary DC

Windows IP Configuration

Host Name . . . . . . . . . . . . : RGRAYBG01
Primary Dns Suffix . . . . . . . : corp.rgrayclamps.com
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : corp.rgrayclamps.com
rgrayclamps.com

Ethernet adapter Bond0 Segment 10 VLAN 20:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : BASP Virtual Adapter
Physical Address. . . . . . . . . : 00-1A-64-F4-10-2C
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 10.153.49.101(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 10.153.49.5
DNS Servers . . . . . . . . . . . : 10.153.49.248
10.153.49.101
127.0.0.1
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter Local Area Connection* 11:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.{0AB90B13-9ADE-4B37-BFF0-8D1708FC8
ABA}
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

jtennyson

ASKER

By the way, I thought I did have IPv6 disabled on the adapters

Darius Ghassem

Just unchecking doesn't disable go through link to disable fully

ASKER CERTIFIED SOLUTION

iamshergill

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jtennyson

ASKER

OK I will do the above. Should I disable IPv6 in the registry or not?

SOLUTION

Darius Ghassem

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jtennyson

ASKER

You don't have the DNS servers pointing to themselves as primary. You have them pointing to the other one as primary.

Darius Ghassem

You want them pointing to themselves as primary then the other DC as secondary

Once making these changes and disable IPv6 go through these commands. ipconfig /flushdns, ipconfig /registerdns, and dcdiag /fix

jtennyson

ASKER

Also, what about the enable IEEE 802.1x authentication. Should I uncheck that.

Darius Ghassem

Leave it

jtennyson

ASKER

Can I disable IPv6 before I restart the computers because I can not restart them for another hour.

Darius Ghassem

You can but I believe IPv6 will not actually be disable until a reboot