Conflict of IP addresses within the network of offices

Original title: Office is connected to a router and modem through son.  Having a conflict of IP addresses in my business network.

Having a conflict of IP addresses in my business network.


If I understand the question, you face a problem of conflict of IP address in the network of the office. Please let me know if this is not correct.
You can check out the link and check if it helps.
If the computer is connected to the domain network, the question you posted would be better suited to the TechNet community. Please visit the link below to find a community that will provide the support you want.

Hope this information is useful.

Tags: Windows

Similar Questions

  • Conflict of IP address on the network

    I have a network error message that says: Windows has detected an IP address of conflict:

    Another computer on the network has the same IP address as this computer.

    Contact your network administrator for assistance. More details are available in the windows system event log.

    I tried to find the windows system event log, and can't seem to change all the settings to do with the network. I'm really worried because what happened now after my hotmail account has been hacked. Can anyone offer advice on what to do please?

    Thank you



    I would check with the COMPUTER service @ student for the appropriate configuration.  Often, this occurs if the computer is configured with static IP address.  If they cannot help you as we work through this, but they would be much faster.

  • Windows system error: there is an IP address conflict with another system with the network. How do I remove this error message?

    I just installed a new internet provider and all of my connections are working fine, but I constantly get this "Windows system error: there is an IP address conflict with another system with the network." I have my electrician of the internet modem connected to my office. I have also two wireless devices connected to the appearance of the Modem wireless. I constantly get this error message mentioned above, and I want to get rid of it.

    This means that all that he says.  Your Windows system has an address that already exists on your local network.  Turn your system off and use a working system to locate this address and to which unit he belongs.  In most LANs, the router's DHCP server.  You may be able to ask the router which addresses are used and see what device uses this address, but I suspect not.

    Duplicate addresses can occur when two systems received the same address manually, or when we got an address in the DHCP of the router range. It is unclear when this happened because he is not in control of the address and puts the address duplicate to a second system.  You need to track down, ensuring that all addresses manually asigned are out of the DHCP range, that you book the address of the router, if you want the device to use this address, or configure all devices to request the address of the router using DHCP.

  • IP address conflict with another system on the network.

    Our operating system is Microsoft Windows XP Professional Version 2002.  WE have set up on a small network of 6 computers.  On three computers, we get a window that opens by telling us that "the system has detected an IP address conflict with another system on the network."     Any ideas as to how we might resolve this problem?

    Hello Jackie,.

    Also, try the following.

    Method 1: Check the settings for dynamic host, Host Configuration Protocol (DHCP) on the router. Contact the manufacturer of the router or the access to the same provider.

    Method 2: Release and renew the IP configuration.

    • Click Start. Click Run, type cmd, press ENTER.
    • Type the first command enough ipconfig and press ENTER.
    • Then type the second command ipconfig / renew and press ENTER.

    See if help above.

  • Getting the error "There is an IP address conflict with another system on the network." on XP computer

    "There is an IP address conflict with another system on the network." I keep getting these messages on my computer. -What it means and how to solve this?

    IP addresses are assigned to a computer in one of two basic methods: the address is assigned automatically by the device "in charge" of the network (in your case, the wifi hotspot router) or the address is set manually on the computer.

    If the address is assigned automatically, the router is "smart" enough to assign a different address for everyone.  However, if your computer has a fixed or 'static' IP address assigned manually, it may conflict with an address assigned by the router to another computer.

    You do not specify, so I'm going to assume that your computer is running WIndows XP...

    1. On your computer, open the network connections (start > run > ncpa.cpl > OK)
    2. Right-click on the icon for your wireless adapter and select Properties
    3. Click on the 'Général' tab, select "Protocol Internet (TCP/IP)" from the list of "this connection uses the following items" and click "Properties".
    4. Select the boxes for two on "Obtain an IP address automatically" and "Obtain DNS server address automatically"
    5. OK your way out.

    This will not adversely affect your computer somehow.

    If the two "automatic" settings were already selected, it is likely that your wireless adapter is managed by a utility provided by the manufacturer of your computer or your adapter wifi rather than Windows.  There should be a wifi icon in the system notification area (near the time display).  Click or right-click on it and see if you can access the menu of configuration settings or to determine at which it is useful.

  • Windows XP SP3: There is an IP address conflict with another system on the network.

    As mentioned, I am under Windows XP SP3.  Starting around June 14, 2011, I get this error message: "There is an IP address conflict with another system on the network."  I didn't any problem access the internet, which is weird considering all the forums I've read the user has had problems with this.

    I followed the steps to solving this problem.  I checked the IP addresses on all devices connected to my network. none match the computer, I get this message.  I tried refreshing and renew my address this computer's IP, but that has not solved the problem.  I've updated my modem drivers; who has not solved.  I checked the settings on my router but nothing.  I have turned off all devices in the House connected to the network, unplugged both the modem and the router, plugged the modem back in (anticipated for a constant signal), then plugged the router and gives him the time, but I got the message again.  I ran scans anti-virus and anti-malware, but neither picked up something.

    I am out of resources in this regard.  I guess that something might be wrong with the router, but that doesn't seem right.  I had no problems with the router as I bought it a year ago, and as I mentioned there are no connectivity issues (always as fast as I'm willing to pay my provider).  Two things have popped up in my mind that could possibly impact this: all about 14, there was a Windows update that has pushed down and the message began not to burst, until, after downloading (but I have not had this same problem on other computers that have received these updates) , and there was a very, very brief power surge (second meaning) in the House around the 16th which caused no (to my knowledge) do anything stop but not a hand a few clocks.  Thank for any help with this!

    No. except if you must move the computer to another network or if you are not actually that responsible for the network.

    As long as you are in charge of your network, you can configure your router to reserve an IP for your machine OR set up so that the DHCP range is, for example, all the IP addresses above to x.x.x.100 and you you give an IP address below that (say x.x.x.99).

    In the first case, you let your computer configured as DHCP - your router just recognize it and gives this machine (and only this machine) reserved IP address.  For the latter, need to change the settings in Windows after changing your router so the DHCP range does not interfere with the static IP address range.  I would say that the latter is more likely to be a problem than the first, especially if there is a chance that this machine moves from one network to the other.

    Personally, I use the booking method on my home network.  In this way my laptop, iPad, etc. all get a given IP address every time (an I know) and I have to set up the real device special somehow.

  • Windows - system error. There is an IP address conflict with another system on the network.

    Windows - system error. There is an IP address conflict with another system on the network.

    This message indicates a problem with the assignment of IP addresses on a home network.  Restarting the computer should fix.  If you have a broadband router, restart the router, too. Boulder computer Maven
    Most Microsoft Valuable Professional

  • New Win 7 computer cannot access the IP address of the network printer. Help, please.



    UPDATE: we have found the solution to this problem, we, and that I posted an explanation as well as two ways to solve the problem in my 2nd post on May 5, 2015. Scroll down to it for the solution. Unfortunately, Microsoft does not allow the OP to mark one of their own messages as 'the Answer' so this thread continues to be listed as "no answer" when he actually answered me.


    The original message follows...

    We cannot sign a new Win 7 (64-bit) computer to a printer ethernet established in our local network of 'working '. We have reached the limit of our troubleshooting skills and expertise assistance.

    Our Local network
    The printer is a Dell 5100cn workgroup laser that is connected via an ethernet cable to a 10/100 workgroup switch 5-port Cisco/Linksys. The switch is connected to the built-in cable Motorola modem / 4 port gigabit router / WiFi access point. There is no server between the printer and the network.

    Other computers on the network run also Win 7 and have no trouble seeing and using the printer. Some computers are connected via a gigabit ethernet cable to the router Motorola. Other computers connect wireless WiFi (once again, by the same Motorola device). All computers, including the new ones, are attributed to the same workgroup.

    The printer has a static IP address. It also has an integrated Web page accessible within the network via a browser to view the status of the printer. All previous computers can view the status of the printer Web page by entering its IP address in a browser.

    The new Win 7 computer
    At the Windows command prompt, we successfully ping the IP address of the printer and received a return signal. However, we are unable to connect to the IP address of the printer (and status Web page) with a browser. And we cannot find the printer when install us the printer driver. We have tried to turn off the Windows Firewall and it did not help.

    When we install the driver, move us as a 'local' printer and create a new "Standard TCP/IP Port" for her. We enter the static IP address of the printer and name the port. Define us the Protocol to "LPR", enter the name of the queue ("lp") and activate SNMP State with name of the 'public' community and the index "1". These settings have worked very well with our previous computers.

    When the time comes to 'choose printer', we select 'have disk... '. ' and use the Dell 64-bit for this printer driver. But it does not work and do not print a test page. We even tried to install the printer as a 'network' printer driver, but it does not, either. In addition, the 'local' method always seemed to work best in the past.

    The new computer has no harm to see other computers and devices on the network. For example, there is a NAS connected to the same switch Cisco/Linksys like the printer and the computer can access the NAS via its static IP address. The new computer can also access the internet. He can't use the IP address of the printer. We even tried to change the address IP of the printer, but that did not help either.

    Despite the fact that the work - the network troubleshooter Windows command prompt ping indicates that the printer is not responding. What do we lack? Help, please.


    I hope that this will be our last post on this subject. We have discovered the source of the problem and can offer two 'fixed' in case someone else runs into the same situation.

    With the help of MSConfig and a process of elimination, we have disabled non-Microsoft services that were running on the computer until we discovered that "Qualcomm Atheros Killer Service V2" was the source of the problem.



    Our new Win 7 computer contains a communication module ethernet/WiFi/Bluetooth e2200 Qualcomm Atheros. The manufacturer provides a '' Killer Network Manager '' for this system. Its purpose is to monitor and control the flow of data over a network connection in order to optimize for. For example, the user can choose to give the program A high priority and program-B low priority. This ensures that the program-A is less lag in the network traffic.

    The primary market for this function, so far, has been the online game (where the name of 'Killer'). It allows players to channel the bulk of the bandwidth available to their game and away from other programs and services that are running at the same time. A response faster online gives the player the advantage it needs to get "kill him" before someone else.

    This system of control of bandwidth has interfered with data packets of return of our network, clearing communication between our computer and our printer printer.

    Difficulty 1


    The simplest solution for us was to disable 'Qualcomm Atheros bandwidth control' for the ethernet NIC that has been accomplished by going to: Windows Control Panel > network and Internet > Network and Sharing Center > change the settings of the card (in the sidebar). Then we clicked on our connection to the LAN (our NETWORK ethernet card) and select the 'Properties' command Finally, on the Networking tab, we have disabled 'Qualcomm Atheros control bandwidth' and clicked 'OK' button to close.

    All that was needed after that was a quick restart and we were able to access our printer even with the killer Network Manager and functioning of Qualcomm Atheros Killer Service V2.

    Either way, we left the control function of bandwidth enabled for wireless (our) network connection because we do not plan on using this network printer when the computer is untethered to ethernet.

    Difficulty 2


    If you don't want the killer running Network Manager on your computer, you may be tempted to uninstall. Do not! Uninstall will also uninstall the drivers needed for your ethernet, WiFi and possibly your Bluetooth as well. We heard that some users have communicated with Qualcomm and were able to coax, on their part, the necessary drivers comm without luggage "Killer". But you don't need to do it, either.

    All you need to do is: (1) remove the 'Killer Network Manager' of the '"start up" folder of the start menu of Windows (under "programs") and (2) using MSConfig, uncheck "Qualcomm Atheros Killer Service V2" under the ' Services ' section. Then reboot and you're good to go. The killer Network Manager and his service will not work.

    Moreover, the reason for which we did not chose this method, ourselves, is because we see one deserves that available Killer Network Manager so that we can block network traffic to select programs. Solution 1 converts this easy thing because the Ethernet bandwidth control can be quickly activated again if she is ever desired. And we're leaving it enabled for our WiFi.

    Best regards, David-EH

  • Changing the MAC address of the network management


    We have 2 servers ESXi 4 in our network. We do not know why, but both have the same MAC address on the network card virtual for the management network. That's a lot of problems with the connectivity of one of ESXi servers.

    Is it possible to change the MAC address?

    Best regards


    Removal and addition of the vswif of the service console should generate a new MAC address.

    esxcfg-vswif - l

    Note the detail.

    esxcfg-vswif vswifN d

    where N represents the number of vswif, d Deletes

    esxcfg-vswif - a n-i < IP > < vswifN > < portgroup > Pei, netmask

    is the command to add a new vswif, even when N is the number of vswif.


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

    I get the message above when starting my computer. Could not find any help on the windows help center can help someone

    Hi DavidTinker,
    The reason is very simple, as says the error, the Internet Protocol (IP) address conflict is there, this means that there are several devices, modems or routers or portable computers that exist on the same IP address that your computer is. In this post, we will tell you how to diagnose and fix this problem.
    Follow these steps in the order and check if it helps to fix the problem:
    a. turn off everything on the network, all the machines and any other network device, such as network printers and NAS drives.
    b. turn off the router and the modem.
    c. turn on the modem, wait for a steady data light.
    d. turn on the router, wait two minutes.
    e. turn on network devices and computers, one at a time.
  • Erro IP address conflict, but no matter what same 2 ip address in the network, how to check

    my network have static IP addresses but xp users only problem with IP address confilict, similarly there is no IP even in networ but his error ipconflict shows how to solve? Please help me


    Give a description of the configuration of the network and the involved network hardware.

    If you have a router make sure that static IP addresses are out of the DHCP range.

  • Feature request: Advanced mode to display the MAC address of the network card

    When a virtual machine has multiple network cards, and when it is not easy to get/know MAC address within o/s comments, it would be nice if there is a way of GUI for the MAC address for any individual network adapter.  I don't mind if this function is in some "advanced only user" box, as long as it is available.

    I know that it is also possible to open the .vmx file for this information, but if there is a sort of GUI, why not?

    Just came across this old post of mine, let me answer myself

    Requested, accessible functionality in the Advanced... button, is available in the Workstation 8 and later versionsand 12 player (at least).

    Thank you VMware!

  • WPC54Gv2 under Windows 98 - can't get the IP address on the network WEP?


    I installed a WPC54G v2 adapter in a laptop running windows 98. I connected to work at a WPA network without problem. I came home and I tried to connect to the network, but you can't get an ip address.

    I know that the network has a WEP 64-bit password (I connected fine from another computer so I know that I have the right password). I compared the WEP key that the linksys client uses with the key in my router settings and they match. I can see the MAC address of the laptop as wireless to my router and linksys customer relationships it is connected to the router, but cannot connect to the internet.

    I tried assigning a manual ip address and using the automatic ip address with no luck. Any help or ideas are greatly appreciated.

    Thank you

    I think that I may have been too far from the access point to connect. I tried again today from another place and I am now connected. Thanks for the suggestions.

  • "Your computer could not renew its address from the network (from the DHCP server) for the network card"?

    I saw this question posted several times here, but I can't find someone who has exactly the same problem I have.

    This problem started a week ago. Basically, my computer loses its connection ethernet once per hour to around the same exact time. which is only for about 5 seconds, but it's enough to get Skype and other things while I'm working, and it's very frustrating because I use Skype to talk with customers, and it looks unprofessional when my calls fall every single time. my computer can also use wireless (which does not go down), but he's too unstable for my work.

    now on the error message I posted. I get this error in my observer of events in about 30 minutes until my ethernet goes down, so I don't know if they are interlaced or not, because I don't get any errors when my ethernet really crashes.

    Here's what I've tried so far without success:

    -temporarily disable the firewall and antivirus

    -updated driver for both my wired network cards and wireless (both were UTD)

    I don't know what to do because I've never had this problem before.

    Here is some information on my computer if that helps all:

    OS: windows 7 Home premium (x 64-bit)

    computer model: gateway DX4870

    Look on the side of the router and make sure that the DHCP lease time has not set to 60 minutes.  As a simple solution you can just assign a reserved DHCP or a static address to the computer (in the router).

    PS: You'll find the DHCP lease on the map with the command ipconfig/all command at a command prompt


  • IP addresses of the network editor VMWare correspond to what is in the Windows network connections

    I use VMWare Workstation 10.0.5 build-2443746 in a host Windows 7 x 64. In the VMWare network Editor, I see three cards:

    VMnet0 - filled

    VMnet1 - host (subnet

    VMnet8 - NAT (subnet

    When I consider these same cards in Windows in the area of network connections and click on each TCP/IPv4 properties there addresses on different subnets for VMnet1 and VMnet8. I do not understand this, shouldn't the subnets to be identical to what is in the VMWare network Editor?

    It is indeed strange. What you can try to do - to find out if this is due to a problem of permission/UAC - is to launch the virtual network editor in the Start Menu "Administrator" to see what happens if you change one of the networks, or click the butoon "Restore Default".


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