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Ben79's avatar
Ben79
Copper Contributor
Jul 08, 2019
Solved

Unable to remove session host "Session host not found"

I'm trying to delete a test host pool that I created, but I'm unable to remove the session hosts. I have deleted the RemoteApps and the AppGroups, but when I try and delete the session host I get a p...
Ben79's avatar
Ben79
Copper Contributor
Jul 22, 2019

Thanks for the response michawets The session host name has a "-" in it, I don't know if that is causing any issues? The full command I'm trying is:

 

Remove-RdsSessionHost -TenantName "RDSTest" -HostPoolName "TestPool" -Name "RDSTEST-2012-1.eu.ad"

 

And that errors out with:

 

WARNING: One or more errors occurred.
Remove-RdsSessionHost :
ActivityId:
Powershell commands to diagnose the failure:
Get-RdsDiagnosticActivities -ActivityId
At line:1 char:1
+ Remove-RdsSessionHost -TenantName "RDSTest" -HostPoolName "Tes ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ CategoryInfo : FromStdErr: (Microsoft.RDInf...eRdsSessionHost:RemoveRdsSessionHost) [Remove-RdsSessionHost], RdsPowerShellException
+ FullyQualifiedErrorId : DefaultNoRdsError,Microsoft.RDInfra.RDPowershell.SessionHost.RemoveRdsSessionHost

 

If I mistype the session host name / dont use the FQDN then I get another error:

 

"Specified SessionHostName %%% does not exist in HostPoolName TestPool"

 

So its the correct name, but I've no idea why I cannot delete it. I'll attempt to create another session host today with no "-" in the name and see if i'm able to delete that host.

 

 

 

Ben79's avatar
Ben79
Copper Contributor
Jul 22, 2019

The "-" in the name is default when provisioning a host pool, which I had totally forgot. So that cant be anything to do with it. I've deployed another host pool into another tenant with corresponding session hosts, and the same issue is evident, I'm unable to remove them.

 

Using the web front end as well fails. "Failed to delete host, problem with server. Please try again"

 

Any help people can offer here would be appreciated, I've no idea what is going on.

  • michawets's avatar
    michawets
    Iron Contributor
    Jul 23, 2019

    Hi Ben79 ,

     

    Could you run a Get-RdsSessionHost for the same sessionhost? Could you post the output?

     

    Thx

    • Ben79's avatar
      Ben79
      Copper Contributor
      Jul 23, 2019

      Hey michawets here is the output:

       

      Get-RdsSessionHost -TenantName $TenantName -HostPoolName $HostPoolName

       

      SessionHostName : RDSTEST-2012-1.eu.ad
      TenantName : RDSTest
      TenantGroupName : Default Tenant Group
      HostPoolName : TestWin2008Pool
      AllowNewSession : True
      Sessions : 0
      LastHeartBeat : 23/07/2019 12:31:05
      AgentVersion : 1.0.833.5
      AssignedUser :
      OsVersion : 6.3.9600
      SxSStackVersion : rdp-sxs190429002
      Status : Available
      UpdateState : Succeeded
      LastUpdateTime : 22/07/2019 12:10:09
      UpdateErrorMessage :

       

      Piping the Get-RdsSessionHost host command to a remove session host, provides the exact same error as well.

      • michawets's avatar
        michawets
        Iron Contributor
        Jul 23, 2019

        Hi Ben79 ,

         

        Could you install Fiddler?

        Then

        • close Powershell
        • start Fiddler
        • start Powershell
        • redo the Remove-RdsSessionHost
        • check the Fiddler output, looking for a call to TenantGroups/{tenantGroupName}/Tenants/{tenantName}/HostPools/{hostPoolName}/SessionHosts/{sessionHostName}

        Could you share the outcome of the HTTP call?

        Especially in the Inspectors, in the Response, the Raw output could be usefull

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