3.1.5.2.3 Receives KRB-ERR-BADOPTION

If Service 1 receives a KRB-ERR-BADOPTION with STATUS_NOT_SUPPORTED or STATUS_NO_MATCH and a DS_BEHAVIOR_WIN2012 DC was not used, then the SFU client SHOULD<13> locate a DS_BEHAVIOR_WIN2012 DC ([MS-KILE] section 3.2.5.3) and retry sending the S4U2proxy KRB_TGS_REQ message. If a DS_BEHAVIOR_WIN2012 DC cannot be found, then the SFU client fails.