PowerShell Cmdlets for Licensing Services

The version of Windows Server 2008 that is included in Windows EBS contains a Windows PowerShell snap-in that serves as the application programming interface (API) to the licensing technology for managing client access licenses (CALs). The snap-in is registered by default on the Management Server, and it includes the following cmdlets that you can use to access functionality in the licensing services:

Cmdlet Description


Assigns a CAL to a user or device.


Removes a CAL from a user or device.


Returns all of the users and devices that have CALs assigned to them.


Returns a summary of each installed CAL pack.


Returns a list of installed CAL packs.


Installs a CAL pack with a specified product key.


Returns CAL pack details for a specified product key.

Help is available for each licensing cmdlet in the snap-in. You can add the snap-in during a Windows PowerShell session and then use the get-help command to view more information about each cmdlet.

To add the snap-in during a Windows PowerShell session and view the cmdlet Help

  1. On the Management Server, click Start, click All Programs, click Windows PowerShell 1.0, and then click Windows Powershell.

  2. At the PowerShell command prompt, type Add-PsSnapin Microsoft.BusinessServer.Licensing.PowerShell.

  3. To view a Help topic about a cmdlet, type get-help <cmdletName>, where cmdletName is one of the licensing API cmdlets. For example, to view help for the Set-Cal cmdlet, type get-help Set-Cal.

For more information about Windows PowerShell, see the Windows PowerShell technical library at the Microsoft Web site (http://go.microsoft.com/fwlink/?LinkId=128018).

For more information about managing CALs with Windows EBS, see Client Access Licenses at the Microsoft Web site (http://go.microsoft.com/fwlink/?LinkID=108930).