Potential DNs issue

damjo · 2016-03-09T15:17:50.000Z

Hi all,

I have an issue with a windows 7 client machines that has been freshly loaded, for some reason windows update will not run and ive exhausted all avenues with this, also i notivced some other strange things and im kinda confident it might be an issue with DNS or the computer account.

I cannot browse the admin share via the name \pcname\c$ i cannot rdp to the machine name i cannot deploy software from our server to the machine name and i cannot ping that machine name HOWEVER when i ping it, it seems to resolve to the wrong IP, if i try all of the above using the actual IP of the machine it all works fine, its almost like somewhere on the network has an old entry for this machine with the incorrect IP address, ive flushed dns on all the server s and clients that im using to try these things, ive also checked DHCP and there are no reservations for this machine and the ip listed in dhcp is actually correct.

any ideas what this might be ?

rockn · 2016-03-09T15:21:53.000Z

Look in DSN for duplicate IP addresses assigned to computer name in your forward lookup zone. How full is your DHCP scope?

maxsec · 2016-03-09T15:32:52.000Z

Do you use the DHCP settings to force the DNS updates?

AS for the updates - try installing IE11 first manually then see if it picks up windows updates correctly…

timgravenites · 2016-03-09T15:47:23.000Z

Is it possible the trust relationship has been broken between this Windows 7 machine and the domain controller? It’s acting really weird, it sounds like you’ve tried a lot of the basics. Have you tried removing it from the domain, adding again?

Have you tried doing an ipconfig /flushdns?

How about resetting the TCP/IP stack with netsh?

c:\ netsh int ip reset

It’s kinda early, I’d probably have to fiddle with the machine myself to really diagnose it, but maybe some command line magic will help.

johnmeredith3839 · 2016-03-09T16:21:51.000Z

Check HOSTS file while you’re at it, if you’re re-using a machine name.

dustythurman · 2016-03-09T18:31:30.000Z

When you do an nslookup on the name, what is the machine that reports the IP? That is a likely place to start and try to find the fault.

damjo · 2016-03-15T08:22:50.000Z

hi guys,

Just to let you knwo i eneded up changing the computer name, I could not find any duplicate entries in either DHCP or DNS or even the computer name, but changing the computer name has done the trick, everything now works perfectly, thanks for your help and suggestions