DNS Windos 2008 Problem
Hello
Here my environment
Single site, single domain, 2 DC
Server 1: Windows 2008 R2 DC, AD, DNS
Server 2: Windows 2008 SP2 DC, AD, DNS, DHCP
Since 4 days, and without any reason, I have the following problem. On server 1 I cannot start normaly DNS. While trying to start DNS it start asking me if the DNS is on this computer or another computer, and when I want to continue DNS start with in RED and nothing appears. There is obviously a DNS problem
I stopped and restarted the DNS services many times (it start normally no error message) but no help the DNS service does start but the DNS application does not start
Of course all DNS related applications and AD does not start. I cannot start AD, sites and services AD, ect...
I can start AD from the second DC since I have no problem from the second DC, DNS is working OK and AD also
I did not rebooted the server 1 yet but I was wondering If there is something else to do before trying a reboot
Thank you
Here my environment
Single site, single domain, 2 DC
Server 1: Windows 2008 R2 DC, AD, DNS
Server 2: Windows 2008 SP2 DC, AD, DNS, DHCP
Since 4 days, and without any reason, I have the following problem. On server 1 I cannot start normaly DNS. While trying to start DNS it start asking me if the DNS is on this computer or another computer, and when I want to continue DNS start with in RED and nothing appears. There is obviously a DNS problem
I stopped and restarted the DNS services many times (it start normally no error message) but no help the DNS service does start but the DNS application does not start
Of course all DNS related applications and AD does not start. I cannot start AD, sites and services AD, ect...
I can start AD from the second DC since I have no problem from the second DC, DNS is working OK and AD also
I did not rebooted the server 1 yet but I was wondering If there is something else to do before trying a reboot
Thank you
ASKER
Yes many errors regarding DNS and AD telling me that a server cannot be found and that DNS found a critical error from AD
Everything started on the 12/01/14. Before that date the event log was 100% clear
Regards
Everything started on the 12/01/14. Before that date the event log was 100% clear
Regards
Please run the command below from the server and paste the result here.
netdiag
netdiag
There could be lot of reasons for that
Have you multiple NICs (Multihomed) enabled and disconnected on server ?
Does your DNS server points to 127.0.0.1 IP in primary DNS entry in tcp/ip settings? and don't have alternate DNS server set ?
You can do below workaround on affected DC and just reboot and check.
HKEY_LOCAL_MACHINE\SYSTEM\
Value name: Repl Perform Initial Synchronizations
Value type: REG_DWORD
Value data: 0
This configuration change is not recommended for use in production environments or in any environment on an ongoing basis. The use of Repl Perform Initial Synchronizations should be used only in critical situations to resolve temporary and specific problems. The default setting should be restored after such problems are resolved.
Check below article for original information source, and possible reasons
http://support.microsoft.com/kb/2001093
Mahesh
Have you multiple NICs (Multihomed) enabled and disconnected on server ?
Does your DNS server points to 127.0.0.1 IP in primary DNS entry in tcp/ip settings? and don't have alternate DNS server set ?
You can do below workaround on affected DC and just reboot and check.
HKEY_LOCAL_MACHINE\SYSTEM\
Value name: Repl Perform Initial Synchronizations
Value type: REG_DWORD
Value data: 0
This configuration change is not recommended for use in production environments or in any environment on an ongoing basis. The use of Repl Perform Initial Synchronizations should be used only in critical situations to resolve temporary and specific problems. The default setting should be restored after such problems are resolved.
Check below article for original information source, and possible reasons
http://support.microsoft.com/kb/2001093
Mahesh
Hi,
Did you try to run a dcdiag?
http://social.technet.microsoft.com/wiki/contents/articles/17741.dcdiag-for-dns-test-auth-basc-forw-del-dyn-rreg-ext.aspx
Did you try to run a dcdiag?
http://social.technet.microsoft.com/wiki/contents/articles/17741.dcdiag-for-dns-test-auth-basc-forw-del-dyn-rreg-ext.aspx
ASKER
Netdiag is not a recognized command
DCdiag returns an error and dos not display anything
(DCdiag runs fine without error on the other DC)
Primary DNS = 10.0.0.6 (the IP of the server itself)
Secondary DNS = 10.0.0.3 (the IP of the other DC in the domain)
Should I remove secondary DNS ?
Thanks
DCdiag returns an error and dos not display anything
(DCdiag runs fine without error on the other DC)
Primary DNS = 10.0.0.6 (the IP of the server itself)
Secondary DNS = 10.0.0.3 (the IP of the other DC in the domain)
Should I remove secondary DNS ?
Thanks
SOLUTION
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ASKER
yes I can
also server 2 from server 1 I can
also server 2 from server 1 I can
ASKER
Server has not been rebooted from 531 days
Maybe just rebooting will help
Maybe just rebooting will help
ASKER CERTIFIED SOLUTION
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ASKER
I will reboot the server this sunday and keep you informed
Thanks
Thanks
ASKER
Sorry I forgot to tell you the end of the story
I rebooted the server and the problem was solved
Thank you for all
I rebooted the server and the problem was solved
Thank you for all
ASKER
thanks
Regards