Hi all, I have a proxy squid+squidguard with ntlm auth (samba+winbind) and all work well with a XP Client. Today a new pc (Windows Vista) was inserted in the active directory domain and this pc are not able to authenticate. In the cache.log I find this: [2008/09/11 16:29:15, 3] utils/ntlm_auth.c:winbind_pw_check(429) Login for user [DOMAIN]\[user]@[PC] failed due to [Logon failure] [2008/09/11 16:29:16, 3] libsmb/ntlmssp.c:debug_ntlmssp_flags(63) Got NTLMSSP neg_flags=0xa2088207 [2008/09/11 16:29:16, 3] libsmb/ntlmssp.c:ntlmssp_server_auth(672) Got user=[user] domain=[DOMAIN] workstation=[PC] len1=24 len2=238 [2008/09/11 16:29:16, 3] utils/ntlm_auth.c:winbind_pw_check(429) Login for user [DOMAIN]\[user]@[PC] failed due to [Logon failure] [2008/09/11 16:29:49, 3] libsmb/ntlmssp.c:debug_ntlmssp_flags(63) Got NTLMSSP neg_flags=0xa208b207 [2008/09/11 16:29:49, 3] libsmb/ntlmssp.c:ntlmssp_server_auth(672) Got user=[user] domain=[DOMAIN] workstation=[PC] len1=24 len2=238 [2008/09/11 16:29:49, 3] utils/ntlm_auth.c:winbind_pw_check(429) Login for user [DOMAIN]\[user]@[PC] failed due to [Logon failure] [2008/09/11 16:29:55, 3] libsmb/ntlmssp.c:debug_ntlmssp_flags(63) Got NTLMSSP neg_flags=0xa2088207 Moreover, on the web I find there are problems with squid and vista (authentication with NTLMv2), but I don't find any solution for this problem. Someone have any idea? Regards Danilo