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Martinsd's avatar
Martinsd
Icon for Microsoft rankMicrosoft
May 01, 2020
Solved

How to troubleshoot Unavailable Status of SessionHost

I am trying to make a Customer's custom image work. I can add it to a hostpool but I can't connect to it. We couldn't connect to the gateway because of an error. If this keeps happening, ask your a...
  • Roop_Kiran_Chevuri's avatar
    Roop_Kiran_Chevuri
    May 01, 2020

    Martinsd Thanks for opening the support ticket. That is the right approach as we would need to troubleshoot where the failures are coming from by looking at your logs.

BenjaminNiemann's avatar
BenjaminNiemann
Copper Contributor
May 08, 2020

Martinsd 

Hi,

 

i can relate to this. Created multible tenats via powershell. (Azure template does not work ?).

Each VM regsitered in the host pool successfully. But each VM is unavailable. Tried different VM´s and different Host Pools. 

 

- Eventlog displays an error like this:

 

"Microsoft.RDInfra.Monitoring.AgentMonitoringService.AgentMonitoringServiceWorker
Fail to set default dimensions Invalid Operation: Fail to set default dimensions, error code is 2147942487.. Error code is 80070057"

 

- I think the SxS Network Stack is broken , because i´m not able to update it (corrupt ressources?).

 

- qwinsta is not very helpfull.

SESSIONNAME USERNAME ID STATE TYPE
services 0 Disc
console 1 Conn
>rdp-tcp#1 appAdmin 3 Active
31c5ce94259d4... 65536 Listen
rdp-tcp 65537 Listen

 

corrupt installation files? Anyone with a brilliant idea?

  • ayanbbhattacharya's avatar
    ayanbbhattacharya
    Copper Contributor
    Nov 04, 2020

    BenjaminNiemann :

     

    Did you get around an solution to this. My problem is similar, I have 2 tenant created and I have 2 host pools . Everytime I build a VM it's resides as unavailable. The agents were reinstalled , but still the problem persists.  -- Ayan

     

    • DrewPetrie's avatar
      DrewPetrie
      Copper Contributor
      Jan 04, 2021

      ayanbbhattacharya 

       

      Did you manage to find a solution for this? Having the same problem.

      • DBR14's avatar
        DBR14
        Iron Contributor
        Feb 15, 2021

        DrewPetrie 

        @ayanbbhattacharya 

         

        Any luck with this? This just suddenly started happening to me today. My test user can connect to the host still despite it saying Unavailable. I can also login with the local admin account via Bastion. But I can't use MSIX App attach as it says none of my hosts have VMs.

  • wapereira's avatar
    wapereira
    Copper Contributor
    Aug 31, 2020
    Guys,

    Follow the step by step to resolve this situation:

    https://docs.microsoft.com/pt-br/azure/virtual-desktop/troubleshoot-vm-configuration

    Error: The status filed in Get-AzWvdSessionHost cmdlet shows status as Unavailable
    Get-AzWvdSessionHost cmdlet shows status as Unavailable.

    Cause: The agent isn't able to update itself to a new version.

    Fix: Follow these instructions to manually update the agent.

    Download a new version of the agent on the session host VM.
    Launch Task Manager and, in the Service Tab, stop the RDAgentBootLoader service.
    Run the installer for the new version of the Windows Virtual Desktop Agent.
    When prompted for the registration token, remove the entry INVALID_TOKEN and press next (a new token isn't required).
    Complete the installation Wizard.
    Open Task Manager and start the RDAgentBootLoader service.

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