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Solved: There is an IP address conflict with another sysytem on the network


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robin_108's Avatar
robin_108 robin_108 is offline
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Join Date: Jan 2010
08-Jan-2010, 09:20 PM #1
Solved: There is an IP address conflict with another sysytem on the network
I have a D-Link wireless router with two wired desktop computers and one wireless laptop. I have had the desktops and the router for years and never had any problems. The laptop was a Christmas gift. I have been using both desktops and the laptop for a couple of weeks now and it's been going great until today. One of my desktops has no internet connection and displays the following message:

"There is an IP address conflict with another system on the network."

No other computers are having this issue. I have "Network Magic" on the other desktop and it is showing the second desktop twice and both have the same IP address. I have tried to change the IP address on the broken computer but every time I try it I get the following message:

"Windows could not finish repairing the problem because the following action cannot be completed:Renewing your IP Address"

Can anyone help me fix this problem? I'm not a computer wiz so simple words please.

Thank you in advance.
TerryNet's Avatar
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Moderator with 66,536 posts.
 
Join Date: Mar 2005
Location: Ottawa, IL
08-Jan-2010, 10:22 PM #2
If you have any static IP addresses on your network make sure they are not conflicting with any Dhcp assigned addresses.

If your wireless network is not secured enable encryption, preferably WPA(2)-PSK.

If you are using WEP change the key or use WPA(2)-PSK instead.

If none of the above helps unplug the router and shut down all computers. Then plug in the router; then boot the computers.

If still a problem please show for all Windows computers ...

Start, Run, CMD, OK to open a command prompt:
(For Vista or 7 type CMD in the Search box after Start)

Type the following command:

IPCONFIG /ALL

[Note that there is no space between the slash and ALL.]

Right click in the command window and choose Select All, then hit Enter.
Paste the results in a message here.

If necessary use a text file and removable media to copy the results to a computer with internet access.
JohnWill's Avatar
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Retired Moderator with 106,412 posts.
 
Join Date: Oct 2002
Location: South Eastern PA, USA
09-Jan-2010, 12:08 PM #3
Repair duplicate IP address on network issue.
  1. Turn off everything on the network, ALL the machines and any other network device like network printers and NAS drives.
  2. Turn off the router and modem.
  3. Turn on the modem, wait for a steady data light.
  4. Turn on the router, wait two minutes.
  5. Turn on the network devices and computers, one at a time.

This issue is usually caused by resetting a router without resetting all the network connected devices.

Another issue that will cause duplicate IP addresses is assigning static IP addresses to devices that conflict with the router's DHCP address range. If you require static IP addressed devices on the network, they should be configured to be in the same subnet but outside the address range defined for the DHCP server.
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robin_108's Avatar
robin_108 robin_108 is offline
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10-Jan-2010, 12:49 AM #4
Through a combination of things I managed to solve the problem. Thank you to everyone for your suggestions.
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Tags
ip address conflict, ip address problem, network problem, renewing ip address

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