1. Joined : Jul 2016
    Posts : 3
    Windows 10
       12 Jul 2016 #1

    Windows 10 randomly drops internet access after upgrade from Windows 7


    Common one this one, but in our case it wasn't a driver issue - it was a DNS issue!

    For us, this problem all seems to centre around DNS. Windows 10 seems to occasionally and randomly change which network adaptor it's going to route DNS requests to. For those who don't know - DNS is a system whereby a name like www. google. co.uk gets converted to a unique machine address such as 182.43.11.202. DNS servers are external computers that provide this service. If this service doesn't work properly, you won't be able to browse any websites properly.

    One solution if you're using WiFi is to disable your Ethernet adaptor in Windows by going into Control Panel -> Network Connections:

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    This will force Windows to always use your WiFi connection for DNS requests.

    So how about if you use your Local Area Connection for something else - maybe for NAS (Network Attached Storage such as an external hard drive)? My father has such a set-up, with a static IP address at each end, so that he can access shared storage. However for some reason Windows was asking this connection for DNS, which obviously wouldn't work!

    (You can confirm this by opening a Windows command window and typing nslookup and pressing Enter. If it shows the IP address of your LAN adaptor instead of the Wireless adaptor, this is what's happening.)

    The fix is to go into your Local Area Network adaptor Properties (same menu as shown in the picture above), then go to Internet Protocol Version 4 and click Properties, then click Advanced, then select the DNS tab. If there are any entries in the "DNS server addresses, in order of use" box, then click on each in turn and click Remove.

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    It would be worth making a note of anything in there before you Remove them, just in case!

    Note that if you access a share on an Ethernet link by a share name (e.g. \\Share\xxx) then you may need to change this to use the device's IP address (e.g. \\192.168.2.1\share).

    Hope this helps - it sorted out our network problems immediately, as Windows then always used the only DNS server it knew about, which was the WiFi one.

    For reference this was a non-Broadcom WiFi dongle and updating all the drivers both for the WiFi and the LAN made no difference - it was definitely down to the DNS issue.

    Good luck all!
    Richard
    Last edited by rgledhill; 13 Jul 2016 at 02:29.
      My System SpecsSystem Spec


  2. Joined : May 2015
    Central IL
    Posts : 3,058
    EL Capitan
       12 Jul 2016 #2

    Are you having an issue? If not, and your fix is not one already in the tutorials, message Brink to review and get it placed into the tutorial section.
      My System SpecsSystem Spec


  3. Joined : Jul 2016
    Posts : 3
    Windows 10
       13 Jul 2016 #3

    Unfortunately I don't have 5 posts so I can't send a direct message... could you do so for me please? Sorry!
      My System SpecsSystem Spec


  4. Joined : May 2015
    Central IL
    Posts : 3,058
    EL Capitan
       13 Jul 2016 #4

    Just keep posting a few more times in different posts that you may find helpful.
      My System SpecsSystem Spec


  5. Joined : Jul 2016
    Posts : 3
    Windows 10
       14 Jul 2016 #5

    I managed to get a message out to Brink as he's deemed it problem-solving rather than an FAQ, so I guess it'll rest here.
      My System SpecsSystem Spec


  6. Joined : Jul 2016
    Posts : 90
    Windows 10
       14 Jul 2016 #6

    Doesn't work for me. Nothing in the DNS or IP etc. What the problem is, is a massive, nasty bug that Microsoft has introduced into Windows 10 networking, and so far no cure for it from Microsoft.

    When connected to a LAN or WiFi it ought to stay latched on like a fighting trained bulldog. No disconnecting or running around trying to find a "better" connection. Just connect to what the user commands it to and STAY CONNECTED.
      My System SpecsSystem Spec


  7. Joined : May 2015
    Central IL
    Posts : 3,058
    EL Capitan
       16 Jul 2016 #7

    Galane said: View Post
    Doesn't work for me. Nothing in the DNS or IP etc. What the problem is, is a massive, nasty bug that Microsoft has introduced into Windows 10 networking, and so far no cure for it from Microsoft.

    When connected to a LAN or WiFi it ought to stay latched on like a fighting trained bulldog. No disconnecting or running around trying to find a "better" connection. Just connect to what the user commands it to and STAY CONNECTED.
    Some adapters are dodgy with Windows 10.
      My System SpecsSystem Spec


  8. Joined : Jul 2016
    Posts : 90
    Windows 10
       16 Jul 2016 #8

    Try this update released July 12, 2016. Many networking related files get updated. Seems to have (finally, after nearly a year!) fixed the problem on my laptop. If you can't get a connection on your Win 10 system to stay up long enough to go to Windows Update, hit the Windows Update Catalog link on another PC so you can download and sneakernet it over on a USB drive.

    https://support.microsoft.com/en-us/kb/3173428

    If you aren't already upgraded to 1511, that has to come first. Good luck!
      My System SpecsSystem Spec


  9. Joined : Nov 2014
    Posts : 18
    Windows 10, build 10074
       05 Sep 2016 #9

    Ethernet Disconnect in Windows 10 rendomly


    While being connected to the internet via Ethernet, suddenly get message No internet connection.
    Restarting the computer works which lets me believe that it is either a Windows 10 but or a problem with my Internet provider. However checking the router, it seems that the Internet connection does not fail. Anybody has the same problem, I am going to restart the router and see it the problems continue.
      My System SpecsSystem Spec


  10. Joined : Jul 2016
    Posts : 90
    Windows 10
       05 Sep 2016 #10

    There is a July 12th 2016 Servicing Stack Update for Windows 10 RTM, so if you still haven't been able to update, google for that and install it. If you did get the 1511 update, there's a different release of the July 12th SSU for it.

    Still can't get an Internet connection and Windows 10's troubleshooter still lies about the modem or router being the problem after installing the July 12th update? Run a command prompt as an administrator then enter netcfg /d at the prompt. Then *close the command prompt window* and reboot. If you just reboot with the command prompt window open, it doesn't work.

    So far the combination of that July 12th update and using that command to delete the network configuration has fixed the "Internet? What Internet? I'm not the problem, it's the router!" issue with Windows 10 on several installs of 10 for me. Only took Microsoft nearly a year from the RTM release to fix the problem. :P
      My System SpecsSystem Spec


 


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