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Runspace.CloseAsync Method ()


Updated: April 27, 2016

Applies To: Windows PowerShell

Closes the runspace asynchronously, and makes it unavailable for use. This method returns control immediately, and then, in a separate thread, closes the runspace and stops all its associated pipelines.

Namespace:   System.Management.Automation.Runspaces
Assembly:  System.Management.Automation (in System.Management.Automation.dll)

public abstract void CloseAsync()

Exception Condition

The runspace is not in a state that allows it to be closed.

For runspaces that are using nested pipelines, this method closes all active pipelines.

To find out the state of the runspace, use the RunspaceStateInfo property.

To close a namespace synchronously, call the Close method.

For more information about runspaces and runspace pools, see Host Application Runspaces.


The user at the command line may not necessarily realize that the commands that Windows PowerShell runs are being processed within a runspace. From the command-line user’s point of view, commands are run in a Windows PowerShell session. From a host application’s point of view, commands are run within a runspace.

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