a139985e_Smart_Card_Events__Description
[Event ID] 617 [Error message] Reader monitor '%1' exception -- exiting thread [Description] 
An unknown error occurred while monitoring a smart card reader for smart card insertions and removals. The smart card reader is marked defective and is not recognized by the service until it is removed from the computer and reinserted or until the computer is restarted. %1 = Smart card reader name
Smart Card Events