The EFS_COMPATIBILITY_INFO type is used to represent information about the compatibility restrictions of an encrypted file.

 typedef struct {
   DWORD EfsVersion;
 } EFS_COMPATIBILITY_INFO;

EfsVersion: The EfsVersion associated with the EFSRPC Metadata. Valid values for the EfsVersion field are described in sections 2.2.2.1, 2.2.2.2, and 2.2.2.3.<29>