a139985e_Smart_Card_Events__Description
[Event ID] 512 [Error message] Smart Card Resource Manager received NULL handle from PnP event %1 [Description] 
An attempt to add a Plug and Play smart card reader failed. The device may already be in use or may be defective. To resolve this error, try to add the device again or restart the computer. %1 = The affected handle name
Smart Card Events