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Windows 7: Windows has detected an IP address conflict

18 Oct 2014   #11

Windows 7 Professional x64 SP1 ; Windows Server 2012 R2 Standard

Quote   Quote: Originally Posted by Involute View Post
I'm running Win7 x64. My PC is connected directly to a Netgear R7000 router to which several other devices are connected wirelessly and directly. This setup has been stable for several months. I started getting the title error two or three days ago, roughly 40 times/hour. I went into Event Viewer and saw that Event ID 1014 (Warning: DNS Client Services) always occurs contemporaneously with the error, and Event ID 4199 (Error: Tcpip) does about 25% of the time; 4199 only appear when 1014 does.

The full text of the 1014 is "Name resolution for the name timed out after none of the configured DNS servers responded." Though the leading digit in the address (6 in this example) varies.

The full text of the 4199 is "The system detected an address conflict for IP address :: with the system having network hardware address 00-00-00-00-00-00. Network operations on this system may be disrupted as a result." This text is always the same.

I've tried ipconfig /release, ipconfig /renew, to no effect.

Any ideas? Thanks.
This would be the cause... some device that is claiming to own your IP address and triggered windows to prompt you of a possible conflict. Question is ... why is the MAC address set to all 0's ... That is normally an indication of a faulty NIC somewhere or a potential network attack.

Normally this happens during the ARP process...

Josh :)

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 Windows has detected an IP address conflict

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