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Yellow triangle over network Connection

    Question

  • I am having a weird issue that i have never seen before.  We are running windows 7 wither server 08 R2 DC.  Not every user but a lot of them are seeing a yellow triangle over their network connection.  When they mouse over it says no internet access, but that is not true they have internet access.  Everything appears to be working correctly the users are just getting frustrated by seeing the triangle.  It is random on who and when it happens.  When i click troubleshoot network connectivity windows can find no problem.  Does anyone have any Ideas?  Thanks in advance
    Friday, September 16, 2011 12:45 PM

Answers

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  • I saw this triangle too before on my Windows 7 PC although Internet connection was working, think it's bug. Usually I just ignore it if Internet connection works well.

    dawooddoe

    Home Network & Wireless Network Help

    Friday, September 16, 2011 4:16 PM
  • If the NIC reports limited internet access, it could mean that the computer is unable to reach this site, which is used by the OS to determine if internet access exists.  If you can access the site directly, that may indicate another issue. 

    http://www.msftncsi.com/ncsi.txt

    You can easily disable this feature for one or more computers on the network.  Read more...

    How to Mange the Network Connectivity Status Indicator
    http://www.anitkb.com/2010/12/how-to-mange-network-connectivity.html

     


    Visit anITKB.com, an IT Knowledge Base.

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    Friday, September 16, 2011 6:09 PM
  • I know it's old thread, but i faced it these days and i would like to share the experience.
    After few days of digging tryin to understand the mechanism of NCSI i found it's uses two process for the indication.

    1- trying to resolve "dns.msftncsi.com"
    2- trying to reach "www.msftncsi.com" HTTP ncsi.txt.

    We have enterprise enviroment. SERVER 2008R2, WINDOWS 7 PRO.
    we don't use IPv6, just IPv4.
    Active Directory+DHCP+DNS in one server.

    Setps i have done to solve this issue.

    - using wireshark, checking traffic passing through network.
    i found a massive of IPv6 requests passing through network which we don't use, i know some unimportant services depend on IPv6. these requests making traffic toward AD requesting DNS for unavailable name
    i.e (isatap.domain.org) which use in IPv6 that's can make DNS busy giving answers.

    - As we know MS prefer IPv6 over IPv4, so IPv6 start checking if not available then jump to IPv4, Wasting Time.
    - when you try to ping or nslookup "www.msftncsi.com" DNS can't find the address which redirect you to akamai.net hosting servers.

    #Solution i used to solve this:

    -If you have firewall add these domain allow to bypass (msftncsi.com) (edgesuite.net).

    -Disabling IPv6 and make IPv4 over IPv6. using group policy.
    here you find details 
    http://social.technet.microsoft.com/wiki/contents/articles/5927.how-to-disable-ipv6-through-group-policy.aspx

    -Modfiy registry key Using GP "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\NlaSvc\Parameters\Internet
    ActiveWebProbeHost Change it to www.msftncsi.com.edgesuite.net
    ActiveWebProbeHostV6 Change it to www.msftncsi.com.edgesuite.net

    How to
    http://www.unidesk.com/blog/gpos-set-custom-registry-entries-virtual-desktops-disabling-machine-password

    -We done just "gpupdate /force" on server and reboot client side.


    Notes: 
    -This can be done on stand-alone Windows OS.
    -Some will find this not helpful depend in your network design, this may happen because of third party software or networklist profile problem etc
    Google it you'll find more


    Hope this will help others

    Thursday, December 26, 2013 7:05 PM