Utility to identify DCs

  • Thread starter Thread starter Japhy
  • Start date Start date
J

Japhy

Hello,
I have a problem with new users setup in AD unable to logon to the
domain.
Users accounts setup in the past can logon. I have read some posts and
am speculating that from the workstations where I can't logon, the DC
is
unavailable and I am logging into the domain with cached information.
Does that make sense?
Is there a utility that I can run on the workstation that will show me
that the DC is currently available or not?
thanks in advance!
 
Hi,
Is there a utility that I can run on the workstation that will show
me
that the DC is currently available or not?
Click to expand...

Start - Run - CMD - ping <IP from DC>
 
OK, thanks...yes, I can ping the DC. Next questions:
1) I can ping, yes, but do you have any guessses as to why it won't
long on the accounts.

2) I see nothing in either any log on either computer as to why I can't
logon with these new accounts. Shouldn't I see something in the DC
event log if an invalid logon attempt is made?
J
 
Hi

Logon problems are usually BAD DNS configuration, or comunication problems:
check:
- Make sure that every domain controller has its DNS properties under NIC
configuration pointing to itself. (If DC IP Address is 10.0.0.1 then Dns
should be 10.0.0.1).



- Make sure that every DNS server can resolve all domains in the forest.
(Use Forwarding, Stub Zones or Secondary Zones).



- Make sure that all clients Only uses the local(s) Dns Server.



How Domain Controllers Are Located in Windows

http://support.microsoft.com/kb/247811/





--
I hope that the information above helps you

Good Luck
Jorge Silva
MCSA
Systems Administrator
 
Thank you gentlemen for your suggestions.
I do have a client on the network that is NOT
using the DC for DNS. Could this be causing a
problem on a DIFFERENT client for logons?
J
 
- Is the DC running DNS?
- Is the DC on client's site?

Make sure that clients ONLY USE THEIR LOCAL DNS SERVER.



--
I hope that the information above helps you

Good Luck
Jorge Silva
MCSA
Systems Administrator
 
Open a command prompt. Run:

IPCONFIG /ALL

The DNS server being used will be listed...

Regards,
Hank Arnold
 
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