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Default Gateway Unavailable / Invalid IP Configuration

By Marcus Gibeson ยท 7 replies
May 14, 2017
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  1. Hello, I've been having trouble with my internet. Figured I'd hop on a forum and see if someone can help me figure it out.
    I was in the middle of an overwatch game, and my internet cut out on me randomly. I have only been connected with ethernet.
    Running Windows Diagnostics, I get the errors "Ethernet" doesn't have a valid IP configuration and The default gateway is not available.

    Steps I've taken:
    1. Reset modem and computer. Computer will connect once modem finishes self-tests, but only for about 30 seconds.
    2. Ipconfig /release and /renew. Command Prompt will freeze after using /renew. Does nothing to fix it.
    3. Uninstalled all antiviruses. Read somewhere that MacAfee sometimes caused it. Although I only used AVG and Avast.
    4. Reset windows. Didnt work, but it gave me a hella headache trying to redo all my files.
    5. Reset modem to factory settings. Had to resetup my Network. All devices except my computer will connect.
    6. Read multiple forums but havent been able to find a solution. Decided to post, hoping someone can help.

    Recap: Computer drops default gateway after modem restarts. Can't renew ip addresses. No internet.

    Thank you for any advice you can offer.
     
  2. jobeard

    jobeard TS Ambassador Posts: 10,061   +766

    Show us the tcpconfig
    • ipconfig /all >myTcp.txt
    open myTcp.txt, copy the content and paste as your follow-up...
     
  3. Marcus Gibeson

    Marcus Gibeson TS Rookie Topic Starter

    I'm using my phone, had to do a bit of file transferring. But here it is:
    C:'Users'Marcus>ipconfig /all



    Windows IP Configuration



    Host Name . . . . . . . . . . . . : Gladius

    Primary Dns Suffix . . . . . . . :

    Node Type . . . . . . . . . . . . : Hybrid

    IP Routing Enabled. . . . . . . . : No

    WINS Proxy Enabled. . . . . . . . : No



    Ethernet adapter Local Area Connection:



    Connection-specific DNS Suffix . :

    Description . . . . . . . . . . . : Killer e2200 Gigabit Ethernet Controller (NDIS 6.30)

    Physical Address. . . . . . . . . : D4-3D-7E-F7-39-AB

    DHCP Enabled. . . . . . . . . . . : Yes

    Autoconfiguration Enabled . . . . : Yes

    Link-local IPv6 Address . . . . . : fe80::1863:d686:9920:6815%3(Preferred)

    Autoconfiguration IPv4 Address. . : 169.254.104.21(Preferred)

    Subnet Mask . . . . . . . . . . . : 255.255.0.0

    Default Gateway . . . . . . . . . :

    DHCPv6 IAID . . . . . . . . . . . : 47463806

    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-20-AA-93-F6-D4-3D-7E-F7-39-AB

    DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1

    fec0:0:0:ffff::2%1

    fec0:0:0:ffff::3%1

    NetBIOS over Tcpip. . . . . . . . : Enabled



    Tunnel adapter isatap.{1A6422B6-1400-4DC7-8FBB-9C9CC743AE1E}:



    Media State . . . . . . . . . . . : Media disconnected

    Connection-specific DNS Suffix . :

    Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2

    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0

    DHCP Enabled. . . . . . . . . . . : No

    Autoconfiguration Enabled . . . . : Yes



    I changed the name of my connection from "Ethernet" to Local Area Connection this morning. Didnt seem to have an effect
     
  4. Marcus Gibeson

    Marcus Gibeson TS Rookie Topic Starter

    One more thing that I forgot to put down in original post, I double checked my TCP/IP settings in my connection properties. Everything is set to obtain IP/DNS address automatically.
     
  5. jobeard

    jobeard TS Ambassador Posts: 10,061   +766

    Yes, but it is FAILING :sigh:
    • Ethernet adapter Local Area Connection:
    • Connection-specific DNS Suffix . :
    • Description . . . . . . . . . . . : Killer e2200 Gigabit Ethernet Controller (NDIS 6.30)
    • Physical Address. . . . . . . . . : D4-3D-7E-F7-39-AB
    • DHCP Enabled. . . . . . . . . . . : Yes <<CORRECT SETTING
    • Autoconfiguration Enabled . . . . : Yes
    • Link-local IPv6 Address . . . . . : fe80::1863:d686:9920:6815%3(Preferred)
    • Autoconfiguration IPv4 Address. . : 169.254.104.21(Preferred)
    • Subnet Mask . . . . . . . . . . . : 255.255.0.0
    • Default Gateway . . . . . . . . . : << HERE'S THE FAILURE
    • DHCPv6 IAID . . . . . . . . . . . : 47463806
    • DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-20-AA-93-F6-D4-3D-7E-F7-39-AB
    • DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
    • fec0:0:0:ffff::2%1
    • fec0:0:0:ffff::3%1
    • NetBIOS over Tcpip. . . . . . . . : Enabled
    You need to disable IPv6

    control->Network & Sharing
    on the left, CHANGE ADAPTER SETTINGS
    dbl-click on Local Area Connection
    clk Properties lower left
    look in the box for Internet Protocol Version 6 (TCP/IPv6)
    CLEAR the box [x] in front of it
    clk OK, then click Close

    Disconnect the PC from the router, wait 15 seconds and then plug it back in.

    control->Network & Sharing should now show Internet is available
    and the IPCONFIG will show your gateway address
     
  6. Marcus Gibeson

    Marcus Gibeson TS Rookie Topic Starter

    Alright, turned it off. Seems like everything is working. You are the man Jobeard. Thank you so much. Any idea why it would have suddenly stopped working? Havent touched my IP settings since I built her a few years ago.
     
  7. Marcus Gibeson

    Marcus Gibeson TS Rookie Topic Starter

    Hold on, spoke too soon. Same problem. It connected for a couple minutes tho.
     
  8. Marcus Gibeson

    Marcus Gibeson TS Rookie Topic Starter

    This issue has been solved. I power cycled everything, reconnected wires and it started working perfectly.
     

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