Windows client Backup(ALLLOCALDRIVES) failed with error code 13

09/08/2015 16:09:57 - Info nbjm (pid=11247) started backup (backupid=clientA_1441708797) job for client clientA, policy PolicyA, schedule DAILY on storage unit xxx-dd-1
09/08/2015 16:09:58 - started process bpbrm (pid=25056)
09/08/2015 16:09:59 - Info bpbrm (pid=25056) clientA is the host to backup data from
09/08/2015 16:09:59 - Info bpbrm (pid=25056) reading file list for client
09/08/2015 16:10:00 - connecting
09/08/2015 16:10:08 - Info bpbrm (pid=25056) starting bpbkar on client
09/08/2015 16:10:08 - connected; connect time: 0:00:00
09/08/2015 16:23:28 - Error bpbrm (pid=25056) socket read failed: errno = 62 - Timer expired
09/08/2015 16:23:33 - Info bpbkar (pid=0) done. status: 13: file read failed
09/08/2015 16:23:33 - end writing
file read failed  (13)