Hello, We are trying to authenticate Windows Vista clients using FreeRadius into a HP Procurve architecture. We configured FreeRadius to operate an EAP-PEAP authentication. This works fine with XP SP2 client but the process blocks with Windows Vista at this point : Sending Access-Challenge of id 70 to 10.40.0.114 port 1073 EAP-Message = 0x010500061900 Message-Authenticator = 0x00000000000000000000000000000000 State = 0x668d79caa2854b593ec7e91a8004030b I saw a few posts on the web regarding to this problem. Some users advise to install kb932063 microsoft hotfix but I still have my problem. A patch has been released in 1.1.3 version and then included to 1.1.4 an older. I use 1.1.6 version. The Option SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS take part of rlm_eap_tls.c file. Does anybody have an idea ? Regards, Nicolas SOULEMAN.