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Brian Kelly
Brian Kelly, Certified Networking Engineer
Category: Networking
Satisfied Customers: 786
Experience:  10 Years Experience, A+, Network +, MCSE
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Windows has detected an IP address conflict. Another computer

Resolved Question:

Windows has detected an IP address conflict. Another computer on this network has the same IP Address as this computer (not the one I'm typing on, but my desk top. Internet is working. I have my desktop plugged straight into the cisco router. All other computers are working in house. What do I need to do to solve the IP address conflict?
Submitted: 1 year ago.
Category: Networking
Expert:  Brian Kelly replied 1 year ago.

XXXXX XXXXX :

Hi my name is XXXXX XXXXX I would be happy to help.


 

XXXXX XXXXX :

So what is happening here is somehow two computers on your network have the gotten the same IP address but we can figure out why.


 

XXXXX XXXXX :

Before we begin do this.


 

XXXXX XXXXX :

Go to each computer on the network (unless were talking about 50 of them or something) and do the following


 

XXXXX XXXXX :

Hit the Windows Key on the keyboard (Should be next to alt) and type "CMD" and hit enter. This will bring up a black box. Tyoe in "Ipconfig" and hit enter. This will display the computers IP address. Lets find the two that have the same one.


 

XXXXX XXXXX :

Do this on all the computers that are there and on right this second


 

XXXXX XXXXX :

You are still getting the error, right?


 

XXXXX XXXXX :

I ask because sometimes these things clear themselves up


 

XXXXX XXXXX :

Im sorry.. above you should be hitting that windows key and the letter "r" at the same time to bring up that run box


 

Customer:

 


going to check now....may take a few minutes

XXXXX XXXXX :

ok no problem


 

Customer:

I don't think this is going to work because my black box keeps going away on this computer and I don't know the password XXXXX my daughter's computer who is at school.


 

XXXXX XXXXX :

hmm, what do you mean the blackbox keeps going away?


 

Customer:

When I hit the windows key and type in config, it flashes up for a second and goes away.

XXXXX XXXXX :

ah, you missed a step


 

XXXXX XXXXX :

in the box type in CMD


 

XXXXX XXXXX :

this will bring up the black box to stay


 

XXXXX XXXXX :

then type in Ipconfig


 

XXXXX XXXXX :

into the black box


 

Customer:

okay, i will try

XXXXX XXXXX :

Also tell me what it says for default gateway.


 

XXXXX XXXXX :

And also what version of Windows you are running if you could


 

Customer:

gateway is 192.168.1.1


Not sure about windows - we have 4 computers in the house

XXXXX XXXXX :

ok what did it say for IP address


 

Customer:

That number is XXXXX my lap top.. I will try the desk top now (it's the one with the problem)

XXXXX XXXXX :

actually


 

XXXXX XXXXX :

I need the I address number. I wanted the gateway as well, but the IP address is the immportant one


 

Customer:

desk top gateway is 192.168.1.1


I think we found it!

XXXXX XXXXX :

Ha not quite yet


 

XXXXX XXXXX :

The gateway is supposed to be the same for all computers


 

XXXXX XXXXX :

The IP address is what we are looking for


 

Customer:

There are several ip addresses: IPv6 or Ipv4?

XXXXX XXXXX :

IPv4


 

XXXXX XXXXX :

Should be 192.168.1.x


 

Customer:

Desk top is 192.168.1.143


 

XXXXX XXXXX :

ah ok perfect


 

XXXXX XXXXX :

And what about the laptop


 

Customer:

my lap top is 192.168.1.141


I can go look at my other daugthers computer (we will call that lap top #2) give me a sec.

XXXXX XXXXX :

ok great


 

Customer:

lap top #2 is 192.168.0.7

XXXXX XXXXX :

ok do you know what version of Windows your desktop is running?


 

Customer:

no - is there a way I can find out?

XXXXX XXXXX :

Go to start and right click on computer and choose properties


 

XXXXX XXXXX :

It should say in the new Window


 

Customer:

it says 7 Windows explorer

XXXXX XXXXX :

ok great


 

XXXXX XXXXX :

Do this for me


 

XXXXX XXXXX :

Go to start and control panel


 

XXXXX XXXXX :

Click view network status and tasks


 

XXXXX XXXXX :

click Change adapter settings


 

XXXXX XXXXX :

Locate your local area connection, right click it and choose properties


 

XXXXX XXXXX :

Highlight IP Version 4 and click properties


 

Customer:

hold on there is a network and internet

XXXXX XXXXX :

It shold be under that


 

Customer:

okay I see tasks and below that I see view computers and divices; Connect to a network; set up a connection; manage network connections and diagnose and repair

XXXXX XXXXX :

Look on the left for change adapter settings


 

XXXXX XXXXX :

See that?


 

Customer:

sorry I don't see it

Customer:

should I click the manage network connections

XXXXX XXXXX :

Yes lets do that one


 

XXXXX XXXXX :

Once clicking that do you see youre local area connection?


 

Customer:

okay, now a box has appeared and at the top it says Local Area connection Properties


 

XXXXX XXXXX :

ok great, do you see IP version 4?


 

Customer:

yes it's in a list

XXXXX XXXXX :

ok highlight that and choose properties


 

Customer:

okay

Customer:

now I have internet protocol version 4 properties

XXXXX XXXXX :

Now then, do you see a bunch of numbers in here or do you see obtain automatically?


 

Customer:

obtain automatically is chosen - there are no numbers

XXXXX XXXXX :

ok great


 

XXXXX XXXXX :

Let me ask, do you still have that black box from earlier up?


 

Customer:

yes -

XXXXX XXXXX :

ok lets try relaeasing the iIP address and renewing it.


 

XXXXX XXXXX :

Do this:


 

XXXXX XXXXX :

Read both parts because the first part will temporarily disconnect you


 

Customer:

k

XXXXX XXXXX :

first type in ipconfig /release


 

XXXXX XXXXX :

Once that is done type in ipconfig /renew


 

XXXXX XXXXX :

This will renew your IP address\


 

XXXXX XXXXX :

and hope fully change it


 

Customer:

okay i got "an error occurred while renewing interface local area connection: 0x80ef0005

XXXXX XXXXX :

hmm interesting


 

XXXXX XXXXX :

I tell you what


 

Customer:

did I need to wait before typing the renew? I may have done it too quick

XXXXX XXXXX :

I think maybe the best thing is for me to opt out and let another tech follow up


 

Customer:

ok

XXXXX XXXXX :

There are numerous techs on here and it should only take a few minutes for another tech to look it over


 

XXXXX XXXXX :

Fair enough?


 

Customer:

okay

XXXXX XXXXX :

ok dont rate my answer, rate the other tech to avoid being billed twice. Thanks!


 

Brian Kelly, Certified Networking Engineer
Category: Networking
Satisfied Customers: 786
Experience: 10 Years Experience, A+, Network +, MCSE
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