Virtual Switch Manger Unable to Create Default Switch in v1809

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  1. Posts : 16
    Windows 10 x64 v1809
       #1

    Virtual Switch Manger Unable to Create Default Switch in v1809


    After upgrading to v1809 I turned Hyper-V feature Off then On. Since then the Default Switch no longer exists and the Virtual Switch Manager is unable to crate it automatically as it would normally. I can see the Default Switch appear for a few seconds in the Network Adapters, then its gone. This happens several time whenever I launch the Virtual Switch Manager.

    I can create other virtual switches.
    Once the Virtual Switch Manager lists the Default Switch with a Load Failed message.

    I have used netcfg -d command and Turned Hyper-V feature Off/On several times with no success.

    Suggestions welcome. :) Thanks
      My ComputerSystem Spec

  2. Kari's Avatar
    Posts : 15,899
    Windows 10 Pro
       #2

    Could you please run following command in elevated PowerShell to copy all possible information about Default Switch to clipboard:

    Get-HNSNetwork | clip

    Reply to this thread, click the CODE tags button to create a CODE box in your post:

    Click image for larger version. 

Name:	image.png 
Views:	1 
Size:	242.7 KB 
ID:	227900

    Now paste the content of clipboard in CODE box:

    Code:
    Paste output of Get-HNSNetwork here.

    That helps us to check if there's an obvious cause for your issue.

    Kari
      My ComputerSystem Spec


  3. Posts : 16
    Windows 10 x64 v1809
    Thread Starter
       #3

    Hi, I was hoping you would see this issue... :) I 've appreciated your other support posts. Since there actually is no Default Switch, should I still try the Powershell command you suggested?
      My ComputerSystem Spec

  4. Kari's Avatar
    Posts : 15,899
    Windows 10 Pro
       #4

    jareinertson said: View Post
    Since there actually is no Default Switch, should I still try the Powershell command you suggested?
    Yes.
      My ComputerSystem Spec


  5. Posts : 16
    Windows 10 x64 v1809
    Thread Starter
       #5

    Powershell clip ...
    Code:
    ActivityId             : F7089A6D-AF83-4EF0-8A30-DBA1D9B427DB
    AdditionalParams       : 
    CurrentEndpointCount   : 0
    Extensions             : {@{Id=E7C3B2F0-F3C5-48DF-AF2B-10FED6D72E7A; IsEnabled=False; Name=Microsoft Windows Filtering 
                             Platform}, @{Id=E9B59CFA-2BE1-4B21-828F-B6FBDBDDC017; IsEnabled=False; Name=Microsoft Azure 
                             VFP Switch Extension}, @{Id=EA24CD6C-D17A-4348-9190-09F0D5BE83DD; IsEnabled=True; 
                             Name=Microsoft NDIS Capture}}
    Flags                  : 0
    Health                 : @{LastErrorCode=0; LastUpdateTime=131975016067872695}
    ID                     : C6A303B8-C03B-44F8-801A-7025DD9336D1
    IPv6                   : False
    LayeredOn              : 8B8D7BC8-C549-4AF5-BBC8-493C96DB9A53
    MacPools               : {@{EndMacAddress=00-15-5D-2E-BF-FF; StartMacAddress=00-15-5D-2E-B0-00}}
    MaxConcurrentEndpoints : 0
    Name                   : Internal Virtual Switch
    Policies               : {}
    Resources              : @{AdditionalParams=; AllocationOrder=0; Health=; ID=F7089A6D-AF83-4EF0-8A30-DBA1D9B427DB; 
                             PortOperationTime=0; State=1; SwitchOperationTime=0; VfpOperationTime=0; 
                             parentId=2EAACA08-178C-4A20-A3CC-775C7D55EAC6}
    State                  : 1
    Subnets                : {@{AdditionalParams=; AddressPrefix=172.24.112.0/20; Health=; 
                             ID=270CF8D0-9254-4420-B1DF-1EFE3E72037A; Policies=System.Object[]; State=0}}
    TotalEndpoints         : 0
    Type                   : Internal
    Version                : 38654705666
    
    ActivityId             : 3E59B364-DD3C-4E4D-9C90-09A4E632EFEA
    AdditionalParams       : 
    CurrentEndpointCount   : 0
    Extensions             : {@{Id=E7C3B2F0-F3C5-48DF-AF2B-10FED6D72E7A; IsEnabled=False; Name=Microsoft Windows Filtering 
                             Platform}, @{Id=E9B59CFA-2BE1-4B21-828F-B6FBDBDDC017; IsEnabled=False; Name=Microsoft Azure 
                             VFP Switch Extension}, @{Id=EA24CD6C-D17A-4348-9190-09F0D5BE83DD; IsEnabled=True; 
                             Name=Microsoft NDIS Capture}}
    Flags                  : 0
    Health                 : @{LastErrorCode=0; LastUpdateTime=131975019711018509}
    ID                     : 2F7ADE23-3C29-494A-B7A4-4575DE79C37F
    IPv6                   : False
    LayeredOn              : 1616946B-FBC7-4D7A-987B-0D04B8A8FE48
    MacPools               : {@{EndMacAddress=00-15-5D-73-1F-FF; StartMacAddress=00-15-5D-73-10-00}}
    MaxConcurrentEndpoints : 0
    Name                   : External Virtual Switch
    Policies               : {}
    Resources              : @{AdditionalParams=; AllocationOrder=0; Health=; ID=3E59B364-DD3C-4E4D-9C90-09A4E632EFEA; 
                             PortOperationTime=0; State=1; SwitchOperationTime=0; VfpOperationTime=0; 
                             parentId=70E72300-5653-4A81-8934-626D74E24D84}
    State                  : 1
    TotalEndpoints         : 0
    Type                   : Transparent
    Version                : 38654705666
      My ComputerSystem Spec


  6. Posts : 16
    Windows 10 x64 v1809
    Thread Starter
       #6

    I posted the results twice (I think) but do not see them here...

    OK there it is...
      My ComputerSystem Spec


  7. Posts : 16
    Windows 10 x64 v1809
    Thread Starter
       #7

    FYI, I just received this reply in a answers.microsoft.com site posting of this issue...
    https://support.microsoft.com/en-us/...sions-of-windo
      My ComputerSystem Spec

  8. Kari's Avatar
    Posts : 15,899
    Windows 10 Pro
       #8

    jareinertson said: View Post
    FYI, I just received this reply in a answers.microsoft.com site posting of this issue...
    https://support.microsoft.com/en-us/...sions-of-windo
    That fix has nothing to do with Default Switch, it only fixes other switches. I'll check your Get-HNSNetwork output, will post back but it might take some time.
      My ComputerSystem Spec


  9. Posts : 16
    Windows 10 x64 v1809
    Thread Starter
       #9

    Thanks!
      My ComputerSystem Spec

  10. Kari's Avatar
    Posts : 15,899
    Windows 10 Pro
       #10

    OK, your output shows absolutely no trace of Default Switch. In my opinion, repair install would be the best option now. Before doing it, just to be sure, run this in elevated PowerShell:

    Get-VMSwitchExtension -VMSwitchName ('Default Switch')

    If you get any output other than error, run the command again adding that | clip to the end of command and paste the output here.

    If it just shows error in red text, continue from here:

    Your specs show you are running W10 v.1809.

    Default Switch can be manually deleted, but only for current session; a reboot recreates it. However, it cannot be manually recreated. Therefore, my recommendation is to perform a repair install of 1809 (tutorial). It is important to disable Hyper-V in Optional Features before you start!

    Also, before doing the repair install, after disabling Hyper-V, turn hypervisor off with following command in elevated Command Prompt (not PowerShell!):

    bcdedit /set hypervisorlaunchtype off

    Restart, then perform repair install to fix the system.

    After the repair install, turn hypervisor on and restart:

    bcdedit /set hypervisorlaunchtype auto

    After restart, hypervisor now enabled, enable Hyper-V and restart. Check if the Default Switch exists, if not post back and figure out something else.

    Kari
      My ComputerSystem Spec


 
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