Hi, I am seeing this error with sss startup. ++++++ Authentication system initialization started. 111007 14:14:20 001 sec_Config: Secsss: bf32 cryptography load failed; Protocol not supported =====> sec.protocol /usr/lib64 sss -s /var/spool/xrootd/.xrd/sss.keytab =====> sec.protocol /usr/lib64 unix Config 2 authentication directives processed in /etc/xrootd/xrootd-clustered-proxy.cfg ------ Authentication system initialization failed. [root@atlas22 ~]# ls -l /var/spool/xrootd/.xrd/sss.keytab -rw------- 1 xrootd atlas 138 Oct 7 14:11 /var/spool/xrootd/.xrd/sss.keytab [root@atlas22 ~]# less /var/log/xrootd/xrootd.log [root@atlas22 ~]# xrdsssadmin list /var/spool/xrootd/.xrd/sss.keytab Number Len Date/Time Created Expires Keyname User & Group ------ --- --------- ------- -------- ------- 1 32 10/07/11 14:09:02 -------- sss_keytab anybody atlas sss.keytab is owned by the xrootd user. Thanks, Doug