Connect Scom powershell using SDK

 The SDK binaries are stored in the following folder on the SCOM MS

C:\Program Files\Microsoft System Center\Operations Manager\Server\SDK Binaries

copy the three dll files to your script folder.

Sample script.

##########################################################################

$rms= "RMS.contoso.com"
$UserName = "domain\username"
$pwd = "password"

$scriptdir = "C:\Scripts"
[System.Reflection.Assembly]::LoadFrom("$scriptdir\Microsoft.EnterpriseManagement.OperationsManager.dll")
[System.Reflection.Assembly]::LoadFrom("$scriptdir\Microsoft.EnterpriseManagement.Core.dll")
[System.Reflection.Assembly]::LoadFrom("$scriptdir\Microsoft.EnterpriseManagement.Runtime.dll")
 $securePassword = ConvertTo-SecureString $pwd –AsPlainText -Force
$MGConnSetting = New-Object Microsoft.EnterpriseManagement.ManagementGroupConnectionSettings($rms)
$MGConnSetting.UserName = $UserName
$MGConnSetting.Domain = $UserDomain
$MGConnSetting.Password = $SecurePassword
$MG = New-Object Microsoft.EnterpriseManagement.ManagementGroup($MGConnSetting)
if(!$MG) {Write-Host "Cannot work on $rms" -ForegroundColor Yellow;continue;}
#######################
Write-host "The Management group is " -nonewline; Write-Host "$MG" -ForegroundColor Yellow

$MG.Administration.GetAllAgentManagedComputers()

###################################################################################

 If you don't use Microsoft.EnterpriseManagement.Runtime.dll binary you will get this error.

New-Object : Exception calling ".ctor" with "1" argument(s): "The service type 'Microsoft.EnterpriseManagement.Runtime.ITaskRuntimeService, Microsoft.EnterpriseManagement.Runtime, Culture="", PublicKeyToken=31bf3856ad364e35,
Version=7.0.5000.0' for the component named 'TaskService' cannot be found."
At line:1 char:1
+ New-Object Microsoft.EnterpriseManagement.ManagementGroup($MGConnSett ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (:) [New-Object], MethodInvocationException
    + FullyQualifiedErrorId : ConstructorInvokedThrowException,Microsoft.PowerShell.Commands.NewObjectCommand