The exception that is thrown when the workflow runtime engine attempts to load a workflow instance that is currently loaded by another workflow runtime engine instance. Additionally, this exception is thrown when the workflow runtime engine attempts to save a workflow after the ownership timeout that was specified while loading the workflow has expired.
Assembly: System.Workflow.Runtime (in System.Workflow.Runtime.dll)
The is used by persistence services which support the capability for multiple applications to access the same database. In such an environment, an instance of the workflow runtime may try to load a workflow that is already loaded by another instance of the workflow runtime engine. For example, the SQLWorkflowPersistenceService class throws the when this situation occurs.
If you implement a persistence service that throws the you should provide the Guid of the workflow instance for which the exception occurs by using an appropriate constructor for the class or setting the InstanceId property before you throw the exception.
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003