2.2.1.1.1 FRS_COMMUNICATION_PROTOCOL_VERSION

 #define FRS_COMMUNICATION_PROTOCOL_VERSION_W2K3R2  0x00050000
 #define FRS_COMMUNICATION_PROTOCOL_VERSION_LONGHORN_SERVER 0x00050002
 #define FRS_COMMUNICATION_PROTOCOL_WIN8_SERVER     0x00050003
 #define FRS_COMMUNICATION_PROTOCOL_WINBLUE_SERVER  0x00050004

These values specify the currently implemented DFS-R protocol version numbers. The protocol version is a 32 bit integer value in which the high 16 bits represent the major version number and the low 16 bits represent the minor version number.  <3>