1.    09 Aug 2015 #1
    Join Date : Jul 2015
    Posts : 3
    Win10 Pro 32-bit

    IPv4 IP address conflict since upgrade to Win10


    Upgraded an old win7 32-bit Dell Dimension 9200 to Win10 Pro on Friday 31st July. I intended to donate it to a school library in Kenya but shipping / customs costs high so now hoping to sell it to raise funds for the same charity.

    On Friday 7th August I started to get Network Error "Windows has detected an IP address conflict" which seems to correspond to event ID 4199 from Tcpip. This was the first reboot following KB3074686 but that may be a coincidence?
    Click image for larger version. 

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    This is the ipconfig (ipv6 continues to work enabling RDP from my laptop but there is no internet access from win10):
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    IPv6 Address. . . . . . . . . . . : fd60:e701:51c6:c400:9c06:6a1e:78ae:ec51(Preferred)
    Temporary IPv6 Address. . . . . . : fd60:e701:51c6:c400:bc75:b302:453f:e3ec(Preferred)
    Link-local IPv6 Address . . . . . : fe80::9c06:6a1e:78ae:ec51%9(Preferred)
    IPv4 Address. . . . . . . . . . . : 192.168.1.3(Duplicate)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Sunday, August 9, 2015 3:54:44 PM
    Lease Expires . . . . . . . . . . : Monday, August 10, 2015 3:54:42 PM
    Default Gateway . . . . . . . . . : 192.168.1.1
    DHCP Server . . . . . . . . . . . : 192.168.1.1
    DHCPv6 IAID . . . . . . . . . . . : 167778769
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-13-73-A1-D3-00-19-D1-2A-97-3A
    DNS Servers . . . . . . . . . . . : fe80::1%9
    192.168.1.1
    192.168.1.1
    NetBIOS over Tcpip. . . . . . . . : Enabled

    There are also NetBT error 4307 errors, I assume they are another symptom and not a cause:

    C:\WINDOWS\system32>nbtstat -n


    Local Area Connection:
    Node IpAddress: [192.168.1.3] Scope Id: []


    NetBIOS Local Name Table


    Name Type Status
    ---------------------------------------------
    ANTHONY-PC <20> UNIQUE Registered
    ANTHONY-PC <00> UNIQUE Registered
    WORKGROUP <00> GROUP Registered
    WORKGROUP <1E> GROUP Registered




    Unfortunately the original graphics card (ATI X1300) was unsupported so I was using it headless through Remote Desktop Protocol which complicated resolving networking issues!
    UPDATE: Having received delivery of a cheap AMD R7 240 the graphics card issue was resolved.

    UPDATE: I have worked around the networking IP address conflict by disabling DHCP and manually assigning an IPv4 IP address outside of the router's DHCP server IP range. NetBT/WINS enabled and name resolution now working correctly with Ubuntu and win8.1 boxes on the same network.

    Should I now attempt a clean install to win10 64-bit (and enable access to full 5Gb memory)?
    According to Belarc Advisor there are some Office 2010 applications licensed on the machine. Should I try to preserve them for charity use or do they need to be replaced?
    Last edited by HeyBig; 17 Aug 2015 at 03:49. Reason: solved
      My ComputerSystem Spec

 


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