IP Conflict

Windows is giving me a warning that I have an IP conflict on a network that is totally static.  Even though it says there is a conflict the IP address in question cannot be pinged.  When scanning for all live IP addresses the IP address in question is listed as "Dead".  This IP Address is for a server and changing it will cause a great deal of problems.

I have attempted to use IPCONFIG /RELEASE  /RENEW to no avail.  I've changed the IP Address and then changed it back to no avail.  I've rebooted the server to no avail.  

How can there be an IP conflict?  How do I remove that conflict?  Can there be such a thing as a bad IP Address?
lordzackAsked:
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jerseysamCommented:
Have you flushed your caches etc?

I always do:

ipconfig /release

ipconfig /flushdns

netsh winsock reset

Then reboot your PC and see if it picks up a new IP. You may also want to check on your server DNS to see if that IP is listed and what against - delete if no longer in use.
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JohnBusiness Consultant (Owner)Commented:
After the above steps (I do similar), run IPCONFIG. What IP do you get?  169.254.x.x is the auto configuration IP indicating no IP.

Do you know the network card is good?
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Paul MacDonaldDirector, Information SystemsCommented:
"...on a network that is totally static."
"I have attempted to use IPCONFIG /RELEASE  /RENEW to no avail. "
These two things are mutually exclusive.  Is the server configured with a static IP or not?  Is DHCP in use on the network or not?
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lordzackAuthor Commented:
When attempting to run the ipconfig /release /renew I get the error:  The Operation Failed As No Adapter Is In The State Permissable For This Operation.

The ipconfig /flushdns & netsh winsock reset did nothing
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JohnBusiness Consultant (Owner)Commented:
Try either reinstalling the driver for the Network card, or try a new Network card.
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lordzackAuthor Commented:
The network is configured with static IP's.  DHCP is not in use.
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jerseysamCommented:
Also run:

netsh winsock reset catalog

netsh int ip reset reset.log


Then reboot
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Paul MacDonaldDirector, Information SystemsCommented:
There's a lot of noise on this thread.

"Windows is giving me a warning that I have an IP conflict on a network that is totally static.  Even though it says there is a conflict the IP address in question cannot be pinged.  When scanning for all live IP addresses the IP address in question is listed as "Dead"."
So there's a server with IP address w.x.y.z, and when you ping w.x.y.z there's no response?  And your IP scanner tells you w.x.y.z is "dead"?  That doesn't make any sense to me.  You also say changing this server's IP address will cause problems but you don't say why.

What are the odds someone brought in a device from home, gave it a static IP address so it would work in your network, and just happened to pick the IP address of this server?  It could be something that gets turned on and off so it causes problems intermittently, but it difficult to detect.
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peggnetCommented:
For troubleshooting purposes, could you try to change the server's IP to something else to verify connectivity?
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Steven CarnahanNetwork ManagerCommented:
The network is configured with static IP's.  DHCP is not in use.

ipconfig /release /renew will do nothing in this situation.

If the address of the server is confirmed as correct yet you can't ping then it appears that the server may have an issue. Can you ping FROM the server to another device?

Are they on a switch that you have access so that you can run a "show arp" command? Have you checked to make sure the port on the switch isn't shut down?

Where are you getting the message of a duplicate IP address? (sounds like on the server).
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Richard MurphySenior Network AnalystCommented:
If you have access to the network switch, display the arp table and that should show you what has the Conflicting IP Address.
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rindiCommented:
If you are using managed switches where the ports have been set differently than the PC's NIC's you can also get strange issues like that. Make sure duplex settings on the switch and the connected NIC are exactly the same. Usually everything set to "Auto" on both sides works best and avoids such issues.
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lordzackAuthor Commented:
Here is/was the problem.  There was indeed an IP conflict but still unable to figure out why.  There was a printer/copier/fiery that I unplugged from the network and this allowed the server to connect to the assigned IP.  My confusion comes from not being able to ping that address before I unplugged it from the fiery.  Why wouldn't the fiery have been able to be pinged?  The Fiery was also purported to have a different IP Address anyway.  So - a little egg on my face but confusing nonetheless.
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Steven CarnahanNetwork ManagerCommented:
The fiery may be set to not respond to ICMP.

Glad you got it figured out.
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