[ Fixed ] There Is An IP Address Conflict With Another System On The Network

by Abhishek Bhatnagar on January 30, 2009

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Trouble:

We received a problem from one of our readers saying that whenever he tries to connect to Internet using his broadband modem, he gets an error saying:

Windows-System Error : There is an IP address conflict with another system on the network

See the image below, this notification usually appears at the bottom right corner in system tray.

ip-address-conflict

The reason is very simple, as the error says, the IP address conflict is there, it means that there are more than one devices, modems or routers or laptops which exist at the same IP address as is your computer. In this post we are going to tell you how to diagnose and fix this issue.

Fix:

To fix this issue you first of all need to count the number of devices that are on the network which you use. By devices we mean, anything connected to the network through wires or wi-fi. These devices can be laptop, a computer, a wi-fi router, a broadband router, or any other device on LAN like an I-phone or any other wifi enabled phone.

 

All these devices when connect to the network, they all use an IP address, which can be assigned to them as and when they connect to network (through DHCP technology, recommended) or they can be allocated in a fixed fashion.

 

IP address conflict arises mostly in case of fixed IP address allocation, so to avoid such errors, you should use DHCP technology on your devices, or else, if you need to use fixed IP allocation because of some reasons, then make sure that each device has a unique IP address.

 

In this post, we tell you how to enable DHCP on your computer/laptops and enable the same on your wired or wireless router.

 

Enable DHCP On Router

 

Access your router by typing its IP address in the browser, typically its 192.168.1.1 or 10.0.0.1, whichever is applicable to your router, and set the WAN settings to use Enable DHCP, the screen may vary in your case, but might look something like this:

dhcp-settings-on-router

This will make the router to assign the IP address to every new device that connects to it, but the device should also be using DHCP. To enable it, see the section below.

 

Automatic Assign IP On Computer

 

On Windows XP, go to Control Panel > Network Connections, right click on LAN connection and click properties.

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network-connection-settings-in-windows-xp

For Windows Vista , go to Control Panel > Network Sharing Center > Manage Network Connections and right click on the LAN connection that you use

manage-network-connections-in-windows-vista

network-properties-in-windows-vista

This will give you a Network Connection Properties window like one below:

network-properties-tcp-ip-v4

Click on TCP/IPv4 and press the Properties button, this will open TCP/IPv4 properties windos as below:

obtain-ip-address-automatically

Select the option with options “Obtain an IP address automatically” and restart your computer. This will fix the problem.

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{ 36 comments… read them below or add one }

whydah December 7, 2009 at 3:24 pm

I’m having this same error message.
However, I live in a condo and I am “piggy-backing” the wi-fi signal of someone in another condo unit which is not locked. I’m only concerned with two things: 1) whose IP address is registering as the “official” one for my computer – his or mine? 2) I’m sure the guy in the other unit is a good guy, BUT, God-forbid he is doing anything illegal with his computer, am I endangered as being linked (an accomplice) to it because of the IP confusion? thanks

Libra82 December 10, 2009 at 1:56 pm

Thank you sooooooooooo much Abhishek!!!!!!!!!! This totally solved my prob!!!!!!!!

Joao December 22, 2009 at 11:37 am

I had spent something like 4 hours reading whatever approach, going to the Microsft site with the solution (a hotfix that did not function at all) and I was already getting desperate.

Then I came to this site and come this guy with a very, enormously easy and simple solution. And guess what, it functioned. I thank you very much for it. Best regards, Joao Garcia

Long December 29, 2009 at 11:15 pm

It worked. Thanks very much!!!

Rich January 6, 2010 at 7:12 pm

I don’t think this information is completely accurate. I say this because reciently, I had this alert on 5 different PC’s at the same time. 3 of the PC’s have been using DHCP (successfully for several years) and the remaining 2 are static. There is no way that 5 ‘new’ devices came online while using the same 5 addresses already in use. What I suspect (by the evidence) is that this is a system/network alert, sent to all the PC’s, and even if some other device out there does not cliflict with yourown address, you still get the alert. If not, can someone please explain a possible explination for what I observed?

Alex February 10, 2010 at 3:28 am

Dosn’t work for me. The error comes up, I exit out, and it comes up agian. Internet is working, but the damn icon is so anoying.

Dez February 13, 2010 at 6:19 pm

The info at the top of this post worked for me. Thanks a lot for the solution. I could not connect to the net although my lappy said it was connected to my wireless router on my pc.

Cheers!

Ralph March 17, 2010 at 5:25 am

THANK YOU SO MUCH!!!!!!!!!!!! IT WORKS!!!!

Chris Z April 7, 2010 at 4:47 am

This ROCKS! Been fighting this for a couple of weeks on an older Windows PC. Thanks for taking the time to inlighten the net about this ☺

maddy April 8, 2010 at 8:53 pm

other answer to remove the notification, ‘there is an ip address…..’ is .. right click on taskbar , go to the costomise notifications , choose the windows system error.. and hide it for always….
u will never get any kind of this messages…
thanks…

PANJUL May 2, 2010 at 2:31 am

thank you very very much !!

Abhishekh Suri May 9, 2010 at 5:59 pm

Thankyou very very much. You made my day

Siri May 12, 2010 at 7:37 pm

My problem is wierd!
When i connect my laptop with vista it shows the conflict, but ping to google or yahoo is working well. But IE and Mozilla are failed to browse any site.

When i connect another laptop (windows xp) it is working without any problem.
Where is the prob??

Thanks in adv.

Rich June 23, 2010 at 1:50 am

Awesome! I had the same problem and you helped me fix it by putting it in terms even I can understand!!! Thank you!!!

Matt Jones June 29, 2010 at 9:36 pm

Thanks so much. I though that I could never get it. Thanks for your help.

javier July 18, 2010 at 4:40 am

the first troubleshooting step is posible replica of ip on computers and or devices on the same network, when this step is checked and everything is ok concerning no same ip s on the network and the sign still appears then there are posible device issues or windows network sisten not working well, I get this error with one modem router I purchased and with the older modem router I do not get this error, I sent it back and they did not recieve the same error message so I shall reinstall the software of the modem router but to me the next probable solution when they are not the above solutions is still a mystery, to my misfortune

Abbey September 21, 2010 at 10:46 pm

This hasn’t worked for me at all. DHCP is enabled, as is auto IP allocation… HELP!

Anflierza October 14, 2010 at 11:04 am

Thank you SO MUCH!!!!!

IT’s work
Awesome!

sunny malhotra October 19, 2010 at 3:11 pm

abhishek you are th master.
keep it up

timm hamm December 1, 2010 at 6:09 am

This was a great fix to an irritating problem. Thank you.

Octa January 19, 2011 at 8:13 am

wow simple and it’s work… thank you so much

PWells January 23, 2011 at 1:58 am

Wow, how easy was this with the right instructions.
I spent an hour trying to solve. Another hour reading other posts about this before I found your solution.
Took me all of 3 minutes to fix it once I read your post. I have no idea how I got the IP address set to manual instead of obtain it automatically. No matter it is now fixed thanks to your solution and instruction.
Thanks a bunch.

reiblistana March 6, 2011 at 11:40 am

thanks!!!!!!it works!!!more power..god bless

Monique March 25, 2011 at 10:38 pm

My laptop is set to obtain my IP address automatically, but still, the thing pops up. I tried replacing the last six digits of the ip address, still nothing. I’ve uninstalled and reinstalled my Ethernet connection (both the program AND the wire) and still, nothing. ._. Help, please.

tejwok simon ajak April 5, 2011 at 12:43 am

My laptop is set to obtain my IP address automatically, but still, the thing pops up. I tried replacing the last six digits of the ip address, still nothing. I’ve uninstalled and reinstalled my Ethernet connection (both the program AND the wire) and still, nothing. ._. Help, please.

.

Alyssa July 15, 2011 at 6:03 pm

THANKYOU, saved me hours of time trying to figure this problem out :)

Artemis August 23, 2011 at 3:52 am

Thank you problem solved

Wringer August 25, 2011 at 7:55 pm

Thank you! I was connecting to our LAN with a wired connection for the first time after having the computer use a wireless device. I got the error message and couldn’t find the problem.

I Googled yesterday but did not get an answer to the problem. After checking more settings today I Googled the problem and got this site.

For some reason the settings were set to use a fixed IP – the same one as out Router! No wonder there was a conflict! I changed the setting and was connected to the network in seconds.

Thank you very much.

Dikhyant August 27, 2011 at 2:18 pm

i have a work place of 30 computers, i enabled the dhcp server to all of them. Right now i am using a multi user broadband connection with 4 switches in different location. Recently i add 15 new system to the network, Problem is that
5 system taking its own ip but rest computer having error ” IP conflict”. I wiil set my dhcp server range from 192.168.0.50 to 192.168.0.200 with a subnet mask 255.255.255.0 tell me how to fix the error

Brajesh September 14, 2011 at 7:29 pm

Thanks it is 100% step by step solution

Sly Deane October 1, 2011 at 5:37 am

Thank you very much. I was able to resolve my ip conflict!

Lynn November 11, 2011 at 12:36 pm

THANK YOU SOOOOO MUCHHHH YOU MADE MY NIGHT! : D

Sam January 25, 2012 at 5:47 pm

Worked perfectly! Thanks a lot, this had been driving me mad for days.

Peter February 21, 2012 at 5:15 am

Hi

I have had the same thing with all,these conflicts. I have just signed up for Sky and the router is swish, hoever I have found at home that my sons new smart TV had caused the conflict. We shut all things down one by one and then the principle pc worked okay. All the systems are now set with DHCP, but the main pc we set within the range, just to make sure.

michael May 16, 2012 at 6:43 pm

hello I have a problem .We have point to point network a tp link router which covers half the house .Hardwired of the back of this router we have a second tp link router connected which doesnt want to work .It can work wired lan to lan connect to wireless runs for short time then conflict message appears dont know anything about computers but it is not going beat me

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