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No Active Network Adapters Found

    Question

  • The host is Hyper-V Server 2008 R2 and only one VM installed on it (Red Hat Enterprise Linux 5 w/ Linux IC), all works fine and recently can't use the remote desktop of the host, ping works w/o problem and remote view event logs etc  work also, remote desktop to the VM also works. When logon local on the host, "No Active Network Adapters Found" message box pops along with sconfig.

    After long time search on internet I only found this one: http://arstechnica.com/civis/viewtopic.php?f=17&t=1118426 with the similar scenrio but w/o solution.

    Any clue or suggestion to solve this problem?

    BTW: the NIC is Broadcom BCM5706S NetXtreme II GigE (NDIS VBD Client)

    TIA.

     

    Tuesday, January 11, 2011 7:16 AM

Answers

  • Hi,

     

    Please use the following tool to check the Hyper-V Server 2008 R2.

     

    Core Configurator 2.0 (x64)

    http://coreconfig.codeplex.com/

     

    By the way, if possible, please schedule a downtime to reboot the computer to see whether you get the same issue.

     

    In addition, as Mike mentioned, it is recommend that you add another physical network adapter to the computer to dedicate it to Hyper-V host communication.

     

     

    Best Regards,

    Vincent Hu

     

    Tuesday, January 11, 2011 9:03 AM
    Moderator

All replies

  • Hi!

    You have to check the box "Allow management operating system to share this network adapter" in Hyper-V manager - virtual network manager.

    I recommend that you add a second NIC dedicated to the virtual network.

     

    Tuesday, January 11, 2011 8:03 AM
  • Thanks. That check box should be checked by default and no one changed it since the VM with runing application on it. The host was restarted because the VM was affected by network access. It's restarted about 1.5 month before and the situation occured again nearly after one month but until now seems the VM still works fine and I'm afraid if can't find the reason some days later the VM will affected again.

    Any more suggestion?

     

    Tuesday, January 11, 2011 8:23 AM
  • Hi,

     

    Please use the following tool to check the Hyper-V Server 2008 R2.

     

    Core Configurator 2.0 (x64)

    http://coreconfig.codeplex.com/

     

    By the way, if possible, please schedule a downtime to reboot the computer to see whether you get the same issue.

     

    In addition, as Mike mentioned, it is recommend that you add another physical network adapter to the computer to dedicate it to Hyper-V host communication.

     

     

    Best Regards,

    Vincent Hu

     

    Tuesday, January 11, 2011 9:03 AM
    Moderator