因為工作階段正在變更其類型，所以方法失敗。當工作階段正在變更其類型時，無法呼叫任何 IOPMVideoOutput 方法。目前有三種類型的工作階段: 主控台、已中斷連線及遠端。

The method failed because the session is changing its type. No IOPMVideoOutput methods can be called when a session is changing its type. There are currently three types of sessions: console, disconnected and remote.