Exception calling "QueryActiveRequests" with "2" argument(s): "Value cannot be null.

by XDK 29. August 2013 09:55


Exception calling "QueryActiveRequests" with "2" argument(s): "Value cannot be null.
Parameter name: second"
At C:\Builds\Service.ps1:2 char:30
+ $tfsadmin.QueryActiveRequests <<<< ($null, "False") | %{ $_.ActiveRequests } | ft StartTime,UserName,MethodName,RemoteComputer
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : DotNetMethodException


The following powershell script to monitor the TFS active requests work on TFS 2010 but fails with the above exception on TFS 2012.

$tfsadmin = New-WebServiceProxy –UseDefaultCredential -URI http://tfs:8080/tfs/TeamFoundation/administration/v3.0/AdministrationService.asmx?WSDL
$tfsadmin.QueryActiveRequests($null, "False") | %{ $_.ActiveRequests } | ft StartTime,UserName,MethodName,RemoteComputer

While accessing TFS 2012 server, the QueryActiveRequests web method fails to accept null value as an argument.


The workaround is to pass the TFS 2012 HostId as first parameter instead of $null

Following are the step to find the TFS host id

1. Open Microsoft SQL Server Management Studio

2. Connect to TFS 2012 data tier

3. Execute the below query

USE [Tfs_Configuration]
SELECT [HostId], [Name] FROM [Tfs_Configuration].[dbo].[tbl_ServiceHost] where [Name] = 'TEAM FOUNDATION'


HostId                                                       Name

4. Replace $null with the HostId

$tfsadmin = New-WebServiceProxy –UseDefaultCredential -URI http://tfs:8080/tfs/TeamFoundation/administration/v3.0/AdministrationService.asmx?WSDL
$tfsadmin.QueryActiveRequests("AAAAAAAA-96A2-4BA8-A74C-11422B123456","False") | %{ $_.ActiveRequests } | sort StartTime | ft StartTime,UserName,MethodName,RemoteComputer


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Azure DevOps on-premises | TFS 2012

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About the author

My name is Xavier Dilip Kumar Jayaraj having 16+ years of IT experience which includes solid experience and depth Knowledge in Application Life Cycle Management, Configuration Management, Implementation and Support using TFS on-premises and Azure DevOps. I have invested in gaining DevOps knowledege to expertise with Cloud Computing providers namely Microsoft Azure and Amazon Web Services in recent years. I am very positive to learn and adapt emerging technologies to client’s environment.

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The information provided here is based on my expreriences, troubleshooting and online/offline findings. It can be used as is on your own risk without any warranties and I impose no rights.