1. Computer problem? Tech Support Guy is completely free -- paid for by advertisers and donations. Click here to join today! If you're new to Tech Support Guy, we highly recommend that you visit our Guide for New Members.

DNS not responding error---DNS flush

Discussion in 'Networking' started by jamesx121, May 9, 2015.

Thread Status:
Not open for further replies.
Advertisement
  1. jamesx121

    jamesx121 Thread Starter

    Joined:
    Apr 22, 2008
    Messages:
    910
    hello
    I'm running Windows 7 (64bit) Home Premium on Comcast's Xfinity Gateway modem/router combo

    i'm starting to see where my internet connection just stops---the little TV with the wire symbol in it,, by the Time Tray
    still shows connected.
    Network & Sharing Center still show connected.
    but if I opened either IE or Chrome they would just put ""Waiting"" in the left bottom corner of the
    screen after opening--
    at first I could just re-insert my cat6 Ethernet cable and everything would work--
    bought a new ethernet cable--
    today re-inserting didn't work,,,, Troubleshooting Network Connection came back--
    ""DNS not responding """ error---
    I looked on my phone / google --said to use Command Prompt to DNS Flush //Ipconfig/release &
    // Ipconfig/renew----
    that worked----
    reading further saw---Microsoft Mini Port is number one cause of DNS not responding errors---
    I found a Wan Mini Port ((disconnected)) in the Network & Sharing Center---
    so I deleted it----- where would Wan Mini Port come from & do I really need it ????
    is Wan Mini Port the same as Microsoft Mini Port????
    would anything else cause me to have to do a DNS Flush ???
    been watching a lot of YouTube lately
    James
     
  2. etaf

    etaf Moderator

    Joined:
    Oct 2, 2003
    Messages:
    65,356
    First Name:
    Wayne
    would you post an ipconfig /all

    would you post the following tests when the internet is working OK, and then repeat ALL the tests when the internet disconnects.
    Make sure you also indicate on the reply which tests are for what condition.

    ------------------------------------------------------------------------
    ipconfig /all

    We would like to see the results from an ipconfig /all - post back the results in a reply here.

    If you cannot access the internet with this PC, then you will need to paste the results into something like notepad and then copy onto a machine that can access the internet and post the results in a reply here.
    Save the file to a USB flash drive or other removable media. Plug it into the working computer with internet access and copy the file and paste here.

    If you do not have another PC - do you have a phone connected to the internet - can you photograph the result and post the image in a reply
    Note: you will see entries named Tunnel adapter Teredo Tunneling Pseudo-Interface: we dont need to see that information - JUST the information above those entries

    For Windows 8
    To open a Cmd Prompt or an Administrator Cmd prompt from the Desktop.
    http://www.bleepingcomputer.com/tutorials/open-an-elevated-command-prompt-in-windows-8/
    Use Win + X and choose Command Prompt or Command Prompt (Admin) from the list.​

    For windows version, XP, Vista, W7
    Hold the Windows key and press R

    Now type CMD

    Now press Enter to open a command prompt box (A new dialogue box - black with white font, will appear on screen ):​

    In the command prompt window that opens, type the following command:

    Note that there is a space before the /ALL, but there is NOT a space after the / in the following command.

    ipconfig /all > network.txt & network.txt

    It will export the results into notepad and then automatically open the notepad and display on your screen.

    Now all you need to do is copy and paste those results into a reply here
    to do that:
    From the notepad menu - choose Edit - Select all
    all the text will now be highlighted
    Next
    From the notepad menu - choose Edit - Copy

    Now go back to the forum - goto the reply and then right click in the reply box and paste the results.
    The results from the notepad should now appear in the forum reply.
    ------------------------------------------------------------------------

    ------------------------------------------------------------------------
    Ping Tests
    If you cannot access the internet with this PC, then you will need to paste the results into something like notepad and then copy onto a machine that can access the internet and post the results in a reply here.
    Save the file to a USB flash drive or other removable media. Plug it into the working computer with internet access and copy the file and paste here.

    If you do not have another PC - do you have a phone connected to the internet - can you photograph the result and post the image in a reply

    For Windows 8
    To open a Cmd Prompt or an Administrator Cmd prompt from the Desktop. Use Win + X and choose Command Prompt or Command Prompt (Admin) from the list.​

    For windows version, XP, Vista, W7
    Hold the Windows key and press R

    Now type CMD

    then press Enter to open a command prompt box (A new dialogue box - black with white font, will appear on screen ): ​

    In the command prompt window that opens

    Type the following command
    Ping {then a space and then add the number that is shown against the item labelled "default gateway" shown in the results from the ipconfig /all}
    Post back the results in a reply here
    right click in the command prompt box
    select all
    enter
    control key + C key - to copy
    then reply here and
    control key + V to paste

    Type the following command
    Ping google.com
    Post back the results in a reply here
    right click in the command prompt box
    select all
    enter
    control key + C key - to copy
    then reply here and
    control key + V to paste

    Type the following command
    Ping 98.139.183.24
    Post back the results in a reply here
    right click in the command prompt box
    select all
    enter
    control key + C key - to copy
    then reply here and
    control key + V to paste



    if you see on the results a
    "general Failure"
    This sometimes means a firewall issue
    What firewall / security suite or anti-virus do you currently have on the PC - or you have ever had on the PC in the past - any trial ware - like Norton, kaspersky or Mcafee or any free security suites like zonealarm, AVG , Webroot etc


    ------------------------------------------------------------------------
     
  3. jamesx121

    jamesx121 Thread Starter

    Joined:
    Apr 22, 2008
    Messages:
    910
    Hey Wayne
    It will be later this evening before I can run the
    test with command prompt.
    I will say the other day Speed Test showed
    my Internet Ping rate at 7

    I was playing on-line game so I checked my
    Internet speed
    I was getting a down number around 126
    & up number of 35 which I thought was low.
    but speed test showed 35 was actually pretty good.
    I'll post the results later tonight my time.
    thanks
    James
     
  4. jamesx121

    jamesx121 Thread Starter

    Joined:
    Apr 22, 2008
    Messages:
    910
    wayne :::
    going to break these up in replies---IPCONFIG/ALL

    Windows IP Configuration

    Host Name . . . . . . . . . . . . : kitchen-PC
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No
    DNS Suffix Search List. . . . . . : hsd1.tn.comcast.net.

    Ethernet adapter Local Area Connection:

    Connection-specific DNS Suffix . : hsd1.tn.comcast.net.
    Description . . . . . . . . . . . : Intel(R) 82579V Gigabit Network Connection
    Physical Address. . . . . . . . . : C8-60-00-C3-F0-92
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    IPv6 Address. . . . . . . . . . . : 2601:2:8b80:3c5:1ce:b270:b2c5:925(Preferred)
    Temporary IPv6 Address. . . . . . : 2601:2:8b80:3c5:987d:a2b8:42b1:5ba2(Preferred)
    Link-local IPv6 Address . . . . . : fe80::1ce:b270:b2c5:925%17(Preferred)
    IPv4 Address. . . . . . . . . . . : 10.0.0.2(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Saturday, May 09, 2015 10:38:38 PM
    Lease Expires . . . . . . . . . . : Saturday, May 16, 2015 10:38:38 PM
    Default Gateway . . . . . . . . . : fe80::2273:55ff:fe2d:d301%17
    10.0.0.1
    DHCP Server . . . . . . . . . . . : 10.0.0.1
    DHCPv6 IAID . . . . . . . . . . . : 348676096
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-19-6F-6D-8A-C8-60-00-C3-F0-92
    DNS Servers . . . . . . . . . . . : 2001:558:feed::1
    2001:558:feed::2
    75.75.75.75
    75.75.76.76
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Ethernet adapter Bluetooth Network Connection:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
    Physical Address. . . . . . . . . : 00-26-83-3B-39-75
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter isatap.hsd1.tn.comcast.net.:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . : hsd1.tn.comcast.net.
    Description . . . . . . . . . . . : Microsoft ISATAP Adapter
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter isatap.{36ABE294-82AB-4A69-B2D8-0D664765148B}:

    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

    Tunnel adapter Teredo Tunneling Pseudo-Interface:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
     
  5. jamesx121

    jamesx121 Thread Starter

    Joined:
    Apr 22, 2008
    Messages:
    910
    Wayne:::
    system would not let me delete this message---
    but got new data so I'm redoing this section
    James
     
  6. jamesx121

    jamesx121 Thread Starter

    Joined:
    Apr 22, 2008
    Messages:
    910
    Wayne:::
    Ping section version 2.0

    I didn't think of using my Administrator Account untill after I had posted the results
    for Ping version 1.0
    didn't get any general failures this time

    results with internet working

    Ping
    Microsoft Windows [Version 6.1.7601]
    Copyright (c) 2009 Microsoft Corporation. All rights reserved.

    C:\Windows\system32>Ping fe80::2273:55ff:fe2d:d301%17

    Pinging fe80::2273:55ff:fe2d:d301%17 with 32 bytes of data:
    Reply from fe80::2273:55ff:fe2d:d301%17: time=2ms
    Reply from fe80::2273:55ff:fe2d:d301%17: time=1ms
    Reply from fe80::2273:55ff:fe2d:d301%17: time<1ms
    Reply from fe80::2273:55ff:fe2d:d301%17: time<1ms

    Ping statistics for fe80::2273:55ff:fe2d:d301%17:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
    Approximate round trip times in milli-seconds:
    Minimum = 0ms, Maximum = 2ms, Average = 0ms

    C:\Windows\system32>

    Ping google.com
    had to type--- control c & v quit---uugghhh

    C:\Windows\system32>Ping google.com
    Pinging google.com [2607:f8b0:4002:c06::65] with 32 bytes of data:
    Request timed out.
    Reply from 2607:f8b0:4002:c06::65: time=23ms
    Reply from 2607:f8b0:4002:c06::65: time=23ms
    Reply from 2607:f8b0:4002:c06::65: time=22ms

    Ping statistics for 2607:f8b0:4002:c06::65:
    Packets: Sent = 4, Received = 3, Lost = 1 <25% loss>,
    Approximate round trip times in milli-seconds:
    Minimum = 22ms, Maximum = 23ms, Average = 22ms

    C;\Windows\system32>

    Ping 98.139.183.24
    C:\Windows\system32>Ping 98.139.183.24
    Pinging 98.139.183.24 with 32 bytes of data:
    Request timed out.
    Request timed out.
    Request timed out.
    Request timed out.

    Ping statistics for 98.139.183.24:
    Packets: Sent = 4, Received = 0, Lost = 4 <100% loss>

    C;\Windows\system32>
    this one was a total failure

    Running McAfee Total Protection &
    Malwarebytes Premium with real-time protection .
    running both IE & Chrome 64bit versions
     
  7. jamesx121

    jamesx121 Thread Starter

    Joined:
    Apr 22, 2008
    Messages:
    910
    before I forget there is also a built in Firewall in the Comcast Xfinity gateway modem/router combo---
    do you want me to manually turn the internet off & then rerun the tests
    or just wait until it quits on its own again ????

    it might be a few days before it acts up----
    this time I went about a week between it acting up on its own--
    James
     
  8. etaf

    etaf Moderator

    Joined:
    Oct 2, 2003
    Messages:
    65,356
    First Name:
    Wayne
    just wait,

    your also using ipv6 - which maybe a problem , as not all sites support ipv6 yet
    i'm wondering if this maybe the issue
    is it certain websites ?

    your also using comcast DNS
    75.75.75.75

    should be OK - but as a process of elimination, if it happens again
    then change to google open DNS 8.8.8.8 and 8.8.4.4
    and see if that resolves the issue
     
  9. jamesx121

    jamesx121 Thread Starter

    Joined:
    Apr 22, 2008
    Messages:
    910
    Wayne::::internet acting up
    this is kinda convoluted answer so bear with me--

    I was playing Black Ops II in ((Steam)) a little while ago---
    when I closed out my game & tried to access Chrome it just kept saying Waiting

    I opened up Network & Sharing Center--Troubleshoot come back as DNS not responding

    so I opened up Command Prompt with Admin rights
    ran Ipconfig/all

    it came back with basically the same data as yesterday--
    so I ran Ping like U wanted.
    here is results for Ping
    C:\Windows\system32>Ping fe80::2273:55ff:fe2d:d301%17

    Pinging fe80::2273:55ff:fe2d:d301%17 with 32 bytes of data:
    Reply from fe80::2273:55ff:fe2d:d301%17 time=15ms
    Reply from fe80::2273:55ff:fe2d:d301%17 time<1ms
    Reply from fe80::2273:55ff:fe2d:d301%17 time<1ms
    Reply from fe80::2273:55ff:fe2d:d301%17 time<1ms

    Ping statistics for fe80::2273:55ff:fe2d:d301%17:
    Packet: Sent = 4, Received = 4, Lost = 0 <0% loss>
    Approximate round trip time in milli-seconds:
    Minimum = 0ms, Maximum =15ms, Average = 3ms

    C;\Windows\system32>

    Ping google.com
    C:\Windows\system32>Ping google.com
    Pinging google.com [2607:f8b0:4002:c09::71] with 32 bytes of data
    General Failure
    Reply from 2607:f8b0:4002:c09::71: time =30ms
    Reply from 2607:f8b0:4002:c09::71: time =41ms
    Reply from 2607:f8b0:4002:c09::71: time =31ms

    Ping statistics for 2607:f8b0:4002:c09::71:
    Packets:Sent = 4, Received = 3, Lost = 1 <25% loss>,
    Approximate round trip times in milli-seconds:
    Minimum = 30ms, Maximum = 41ms, Average = 34ms

    C\Windows\system32>

    Ping 98.139.183.24
    was a total failure again
    lost all 4 packets

    looks like Pinging my IP Address made it start working again
    just slower than yesterday results---
    I will post the results for today's ipconfig/all in the next reply--
    this one is kinda long
    James
     
  10. jamesx121

    jamesx121 Thread Starter

    Joined:
    Apr 22, 2008
    Messages:
    910
    results for ipconfig/all
    when dns was not responding
    today
    Windows IP Configuration

    Host Name . . . . . . . . . . . . : kitchen-PC
    Primary Dns Suffix . . . . . . . :
    Node Type . . . . . . . . . . . . : Hybrid
    IP Routing Enabled. . . . . . . . : No
    WINS Proxy Enabled. . . . . . . . : No
    DNS Suffix Search List. . . . . . : hsd1.tn.comcast.net.

    Ethernet adapter Local Area Connection:

    Connection-specific DNS Suffix . : hsd1.tn.comcast.net.
    Description . . . . . . . . . . . : Intel(R) 82579V Gigabit Network Connection
    Physical Address. . . . . . . . . : C8-60-00-C3-F0-92
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes
    IPv6 Address. . . . . . . . . . . : 2601:2:8b80:3c5:1ce:b270:b2c5:925(Preferred)
    Temporary IPv6 Address. . . . . . : 2601:2:8b80:3c5:3533:edea:4106:61ae(Preferred)
    Link-local IPv6 Address . . . . . : fe80::1ce:b270:b2c5:925%17(Preferred)
    IPv4 Address. . . . . . . . . . . : 10.0.0.2(Preferred)
    Subnet Mask . . . . . . . . . . . : 255.255.255.0
    Lease Obtained. . . . . . . . . . : Sunday, May 10, 2015 9:34:26 AM
    Lease Expires . . . . . . . . . . : Sunday, May 17, 2015 9:34:27 AM
    Default Gateway . . . . . . . . . : fe80::2273:55ff:fe2d:d301%17
    10.0.0.1
    DHCP Server . . . . . . . . . . . : 10.0.0.1
    DHCPv6 IAID . . . . . . . . . . . : 348676096
    DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-19-6F-6D-8A-C8-60-00-C3-F0-92
    DNS Servers . . . . . . . . . . . : 2001:558:feed::1
    2001:558:feed::2
    75.75.75.75
    75.75.76.76
    NetBIOS over Tcpip. . . . . . . . : Enabled

    Ethernet adapter Bluetooth Network Connection:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Bluetooth Device (Personal Area Network)
    Physical Address. . . . . . . . . : 00-26-83-3B-39-75
    DHCP Enabled. . . . . . . . . . . : Yes
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter isatap.hsd1.tn.comcast.net.:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . : hsd1.tn.comcast.net.
    Description . . . . . . . . . . . : Microsoft ISATAP Adapter
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes

    Tunnel adapter isatap.{36ABE294-82AB-4A69-B2D8-0D664765148B}:

    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

    Tunnel adapter Teredo Tunneling Pseudo-Interface:

    Media State . . . . . . . . . . . : Media disconnected
    Connection-specific DNS Suffix . :
    Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
    Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
    DHCP Enabled. . . . . . . . . . . : No
    Autoconfiguration Enabled . . . . : Yes
     
  11. etaf

    etaf Moderator

    Joined:
    Oct 2, 2003
    Messages:
    65,356
    First Name:
    Wayne
    As i mentioned I thought it may possibly be a IPV6 issue -

    You can disable IPV6 using the fixit here
    https://support.microsoft.com/en-us/kb/929852

    and also you can re-enable IPV6

    I have tested on a windows 7 PC and it works OK on my test PC
     
  12. Sponsor

As Seen On
As Seen On...

Welcome to Tech Support Guy!

Are you looking for the solution to your computer problem? Join our site today to ask your question. This site is completely free -- paid for by advertisers and donations.

If you're not already familiar with forums, watch our Welcome Guide to get started.

Join over 733,556 other people just like you!

Loading...
Thread Status:
Not open for further replies.

Short URL to this thread: https://techguy.org/1147966

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice