PowerShell activity pack PowerShell is built on the Windows .NET Framework and is designed to control and automate the administration of Windows machines and applications. Orchestration provides custom PowerShell activities that were created with the PowerShell activity designer template. These activities perform the same functions as PowerShell activities by the same name from previous releases and replace those activities for all new workflows. These custom activities give workflow administrators the ability to store input and output variables in the databus. Note: Existing workflows from earlier versions that were created with legacy PowerShell activities continue to function normally after an upgrade to Geneva. However, all new workflows must use these custom PowerShell activities. To use the PowerShell custom activities, you must request activation of the Orchestration - PowerShell plugin. These activities are available in the workflow editor on the Custom tab. Expand the Custom Activities tree and select the PowerShell category for the activity you want to use. ServiceNow supports PowerShell 2.0 and above. However, PowerShell 3.0 does not support Windows Server 2003. Join Domain activityThe Join Domain activity joins a Windows computer to a domain.Install Windows App activityThe Install Windows App activity installs an application from an MSI package on a Windows target machine.Restart Windows Server activityThe Restart Windows Server activity stops and then restarts a Windows server using Powershell.Uninstall Windows App activityThe Uninstall Windows App activity uninstalls an application from a Windows target machine.