http://wiki.nas4free.org/doku.php?id=faq:0033 Q: How can I fix the “smb_pwd_check_ntlmv1: incorrect password length” errors I keep seeing in my logs? A: People have reported different causes / solutions for this error. The most likely solutions are #1 & #2 but feel free to try the others. If you are using Windows 7 or Vista clients you might want to check your LAN Manager Authentication settings as in –dead link {[SOLVED] smb_pwd_check_ntlmv1: incorrect password length} –. See also –dead link {SMB Errors When Copying Files [SOLVED] Windows 7} –. Read Authentication Issues; Microsoft Article ID: 954387 for more details. If you are using Domain Authentication, the CIFS/SMB (Samba) auxiliary parameter use spnego = false has been reported to prevent this error. This may also work with other authentication methods. See –dead link {Windows 7 and Nas4Free} – If you enabled LDAP [ more… ]