Network card only enabled after using Linux Live USB

  1. Fontenele's Avatar
    Posts : 3
    Windows 10 Pro x64 Build 1903
       #1

    Network card only enabled after using Linux Live USB


    Hello everyone,

    I have the following problem in several computers in my company. The network cable it is enabled at the device manager but i have no network connection.
    I've tried the command "netsh winsock reset", restart Windows, but still with no network connection.
    To troubleshoot, i have to put a Linux Live USB (Linux Mint, Ubuntu...), acess the live system, restart the computer and then, at Windows 10, network it is ok.
    About the versions of Windows 10, i have them from the first release to 1903, all randomly, sometimes, returning with this problem. In time, we use Sophos as antivirus and most of the network cards are Realtek.

    Thanks in advance,

    Fontenele
      My Computer

  2. Caledon Ken's Avatar
    Posts : 25,590
    Windows 10 Pro x64 Version 21H1
       #2

    Hi Fontenele. Welcome to the TenForums @Fontenele.

    Interesting that so many of your computers are on 1903 and having issues, did you force the update?

    You mentioned most computers are on Realtek adapters, which would imply it also happens on non Realtek devices, Qualcom, etc. So I would be looking for something network wide.

    Are the computers using DHCP or static addresses in Windows?

    In Windows are you using any special communication software like VPN's or proxies in Windows?

    Are you using any third party AV's in Windows?

    Have you tried totally disabling IPv6 on a computer as a test.

    https://support.microsoft.com/en-ca/...advanced-users

    Is your router firmware up to date?


    Ken
      My Computer

  3. Fontenele's Avatar
    Posts : 3
    Windows 10 Pro x64 Build 1903
    Thread Starter
       #3

    Thanks for the reply Caledon Ken, i'll aswer below:

    Caledon Ken said:
    Hi Fontenele. Welcome to the TenForums @Fontenele.

    Interesting that so many of your computers are on 1903 and having issues, did you force the update?

    You mentioned most computers are on Realtek adapters, which would imply it also happens on non Realtek devices, Qualcom, etc. So I would be looking for something network wide.

    Are the computers using DHCP or static addresses in Windows?
    The computers here are using static addresses
    In Windows are you using any special communication software like VPN's or proxies in Windows?
    No VPN's or proxies over here
    Are you using any third party AV's in Windows?
    We use Sophos Protection
    Have you tried totally disabling IPv6 on a computer as a test.
    Not yet, i'll try it next time it happens, i'll keep you informed about that
    https://support.microsoft.com/en-ca/...advanced-users
    Is your router firmware up to date?

    I don't have access to the routers or switches here :-(
    Ken
    So, as i said above, i'll try disable IPv6 and wait to see if it happens again.

    Fontenele
      My Computer

  4. Caledon Ken's Avatar
    Posts : 25,590
    Windows 10 Pro x64 Version 21H1
       #4

    Check the addresses if static, something within update may have changed them.

    Duplicate IP addresses should cause notification but on the off chance they aren't it would help to explain intermittent nature, that is some devices are coming and going.

    Do you use static addresses when you use Linux Live?

    Also would see if disabling AV on a known device resolves issue, another thing that is not part of Linux Live.

    While you can't manage routers you must have a support number to call to inquiry on their maintenance. Have they recently done anything?
      My Computer

  5. jimbo45's Avatar
    Posts : 10,888
    Windows / Linux : Arch Linux
       #5

    Fontenele said:
    Hello everyone,

    I have the following problem in several computers in my company. The network cable it is enabled at the device manager but i have no network connection.
    I've tried the command "netsh winsock reset", restart Windows, but still with no network connection.
    To troubleshoot, i have to put a Linux Live USB (Linux Mint, Ubuntu...), acess the live system, restart the computer and then, at Windows 10, network it is ok.
    About the versions of Windows 10, i have them from the first release to 1903, all randomly, sometimes, returning with this problem. In time, we use Sophos as antivirus and most of the network cards are Realtek.

    Thanks in advance,

    Fontenele

    Hi there
    stop the Sophos Anti Virus and disable amny firewalls on your Windows systems for testing. The chances are that your live linux distro has no firewall enabled by default. Check also your Windows systems are set to enable Network discovery and that the box "allow remote connections to this computer" is checked.

    If all else fails also allow SMB1 on the windows machines.

    Once you've got the network functioning so computers can access what they need to you can gradually stat tightening up security agai - but one thing at a time -- e.g remove SMB1, test again, start firewall test agin.

    Personally Windows defender these days is perfectly OK - a lot of 3rd party anti virus software really doessn't play nice on later (1903) versions of Windows 10.

    Cheers
    jimbo
      My Computer

  6. Fontenele's Avatar
    Posts : 3
    Windows 10 Pro x64 Build 1903
    Thread Starter
       #6

    Hello folks,

    I'm waiting to happen again. I'll keep you informed. Thanks a lot for the tips.

    Fontenele
      My Computer



 

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