Hi everibody! I'v a samba pdc, I'v tried to use squid with ntlmssp to authenticate but I'v some problem with authentication popup :(, on the cache.log of squid I see: ... NTLMSSP challenge NTLMSSP challenge NTLMSSP Sign/Seal - Initialising with flags: NTLMSSP Sign/Seal - using NT KEY NTLMSSP OK! NTLMSSP Sign/Seal - Initialising with flags: NTLMSSP Sign/Seal - using NT KEY NTLMSSP OK! NTLMSSP NT_STATUS_WRONG_PASSWORD NTLMSSP Sign/Seal - Initialising with flags: NTLMSSP Sign/Seal - using NT KEY ... why NT_STATUS_WRONG_PASSWORD ? my portion of smb.conf: lanman auth = Yes ntlm auth = Yes client NTLMv2 auth = Yes client lanman auth = Yes client plaintext auth = No winbind cache time = 15 my squid.conf: auth_param ntlm program /usr/bin/ntlm_auth --helper-protocol=squid-2.5-ntlmssp auth_param ntlm children 5 auth_param ntlm max_challenge_reuses 0 auth_param ntlm max_challenge_lifetime 15 minutes my client are w2k. francesco.