IP Address Conflict Message On One Of Our Computers

Jun 1, 2011

here where I work we are having an issue with IP Address conflicts. We are not sure exactly why, though. We have only had it happen 2-3 times so far, but this has been over the past week or so, and we would like to get it resolved. Here is what is happening: Last week we were getting an "IP Address conflict" message on one of our computers. It had received from our DCHP server, so we switched it to a static IP address up beyond our DHCP range. We then tried pinging the address with the conflict, but got nothing. We figured it was some device that had a static address, so on the DHCP server we reserved it to a non-existent mac address so it wouldn't hand that one out again. This wasn't a problem, since it was an isolated incident.

Since then we have tried periodically pinging to see if there is actually a device using that address, but have gotten no replies. Since then we have had another one or two times where this has happened, but with different IP addresses. We went around and checked a couple of different wireless routers that we had deployed, but the DHCP had been disabled on all of them (but then again, the issue came up just recently, while the routers have been out there for months).

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Netgear WNR612 Wireless Router - Network Error Message Saying Windows Has Detected IP Address Conflict

Jan 5, 2013

I have a Netgear WNR612 wireless router, which worked fine for a few weeks. Then something happened and I can't keep the connection anymore. It happened right after I used iTunes to update my iPhone, perhaps a coincidence, but I'm mentioning that just in case. Internet still works fine with ethernet cable straight from the computer, only the wireless connection doesn't work. This happened about a month ago and I haven't been at home much to fix the problem. I have turned off and unplugged everything for several days at a time while gone. I get a Network Error message saying, Windows has detected an IP address conflict. I have tried restoring the router back to factory settings and reinstalling the wireless card. I have tried changing the IP address settings both in the Network and Sharing Center and the router admin page. What I think I should do is change the IP address in Command Prompt, but when I type "ipconfig /release", it says "No operation can be performed on Wireless Network Connection 2 while it has its media disconnected" and the same for Local Area Connection. I don't understand what this means, because there is a wireless key in my keyboard and there is a white light (not orange) like there should be. Also in the Network and Sharing Center, I can see that the connections are enabled.

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Can an IP conflict cause network issues for computers other than the devices that have the same IP? I have resolved an issue where someone was testing a device on our network and assigned a static IP that was already in use by one of our printers. Specifically, I am curious if the IP conflict could have caused issues with mapped network drives for other computers. I just seemed to have network gremlins for the 2 days of the IP conflict.

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Apr 22, 2011

When I sign on the internet, I get a Windows System Error - "There is an IP address conflict with another system on the network." I went to command prompt and typed "ipconfig /renew" but the response was "No operation can be performed on Local Area Connection while it has media disconnected".

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When I checked in the router settings, I found had been assigned to the other PC, which also has the hardware address given in the error message - I'm not sure how that constitutes a conflict!When I get this error message, I never encounter any connectivity problems - i.e. both machines can still access the internet.

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Aug 5, 2011

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Oct 26, 2012

I've been getting a popup error message for about a week:"There is an ip address conflict with aother system on the network". This is only for 2 desktop PCs with wired ethernet connections. Wireless devices are fine with no error message. The wired LAN PCs basically lose all network capability. Reboot fixed it, but it returned every time it was rebooted.I have a Virgin Media Superhub with another router configured as an access point. To cut a long story short, after trying to reset everything, re-installing network adapters & swapping ports, I decided to set the Superhub to Modem Mode, and re-configure the access point router to act as a standard wireless router. In other words renewing the whole network's LAN IP addresses.I now don't lose network capability, but the error message is still appearing on both wired LAN PCs. I use the Fing app on my android phone which lists IP addresses for all devices on the network, wired and wifi, and no 2 addresses are the same, which suggests that DNS is doing its job.

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Mar 20, 2011

I have been having router/wireless internet issues since my internet provider had to come out and fix the outside lines. Ever since then I get the Network Error: "Windows has detected and IP address conflict" whenever my laptop and my wife's try to use the wireless at the same time. I have tried release/renew of my IP address and also reseting my router to factory settings to no avail.

Computer info and ipconfig/all:
Tech Support Guy System Info Utility version
OS Version: Microsoft Windows 7 Home Premium , 64 bit


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Oct 19, 2012

There are about 3 laptops, one desktop, and 2 gaming consoles that are using the router. Everything connects fine expect the one laptop. It is an ASUS laptop running Windows 7. Whenever the laptop is going to connect to the internet every other device using the internet is stalled for a few moments, then reconnects. The computers then give the IP Address Conflict message. This is extremely frustrating. Sometimes it happens when people are accessing the Web for college assignments, and sometimes gaming, which is annoying to get disconnected from. I have tried to release / renew the IP, but it tells me it can't complete the process.

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Mar 17, 2013

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May 18, 2011

I have recently started getting random 'Windows System Error- There is an IP conflict' blah blah blah messages on my PC, this only seems to happen when I also have the wireless switched on on my HTC Desire phone.I have done the usual checks and everything in the house, that is connecting to the wireless (2 phones and a laptop) is on a different IP address so as far as I can see there is no actual conflict.I have a Netgear WPN824v2 Router with the main PC connected to it. Sometimes it goes for ages without doing it or I can get one after the other, sometimes the PC drops it's internet connection altogether.

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Feb 4, 2011

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It had been functionally normally.until we changed ISP after ours was taken over (we didn't change but the provider obviously now has). However, since then (1st Feb) we've been having connection issues, probably an IP address conflict where items can access the router but not the internet.

The iPod and Xbox sometimes don't connect, as do the laptops often after been powered up from a sleep. Yesterday, when powering up one of the laptops, I got an IP address conflict message. Restarting the router sometimes works, but mostly it allows one device on and not another.

The printer has a static IP address ( that I had to set up to get it working, but this has been active for months now without issue. I've had a look in the router settings and it's set up for DHCP as default with IP addresses from to so I don't understand why it has this issue suddenly. I had a look at the connected devices list, and everything appeared to have its own IP address.

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I am having issues with wireless connections with my laptop but I can connect with my phones and iPod, however wired connections work perfectly.

The moment I attempt a wireless connection I receive continuous error messages saying that there is an ip-address conflict with another system on the network and i lose all internet access.I have already tried adding a dhcp reservation?

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Feb 5, 2012

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Jan 17, 2011

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I get a "IP address conflict" message on my wireless network. Using a WRVS4400n wireless router with the latest firmware that is set to PPoE. Motorola 336 dsl modem is set to bridge mode. My network has 2 computers attached: hardwire desktop and wireless connection to laptop. When I contacted ATT support, they said the problem is in the wireless modem. Are there some settings in the WRVS4400n that must be set to insure that each computer gets a different IP address?

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Nothing seems to be able to connect to my wireless network. It seems to have occurred after I installed a new copy of windows 7 onto my sister's desktop. A message appeared saying we have the same ip address. I've tried renewing our ip address on both desktop but it won't give us new ip address for some reason.

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Feb 7, 2012

I have switch 2960 and router that connect with one interface to that switch. the link is trunk and Router function is inter vlan routing between 4 vlan. This netwrok has only one ip address space that is and work without problem. We connect  cisco switch 2960 with optic link to another switch that in stack 3750 which configured as trunk link and allowed only 3 vlan between them. In the other side netwrok which consist the switch 3750 we have different subnet ip address that switch working in layer 3 too. the problem is that when I permit vlan 210 in the switch 2960 only layer 2 between this switch and the 3750 in network that consist th ip address devices, if I disconnect and then connect pc to network he says that he has ip conflict and in the log  he show mac address of router that has vlan 210 subinterface configured with 10.10.2./24 subnet. But how I gibe back vlan 210 from permited  vlan in trunk  devices start normaly working. If I again put vlan 210 to permit vlan in that trunk  devices again said that there are conflict  ip address and show mac address vlan 210 router subinterface.

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I bought this router solely for one purpose - I was happy with speed of my DIR-300, but I needed gigabit for my computers. So I thought, instead of buying separate switch, I'd better buy a router with gigabit. I was suggested to get TP-LINK 1043, since it's quite popular, alternate firmwares available and so on, but I refused to buy it, since I thought that some chinese company does not worth my attention. So I bought this D-Link (for almost 2x price of TP-Link) and having huge problems as you can see.

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