This is really a Windows question, but I figure an expert on Samba ought to know the answer.
Samba rejects attempts by my Windows machine to connect. Hours of studying and investigation shows that the reason is that Windows is not sending a password with the userid. It sends the expected userid, but the "password length" fields in the packet are zero. This in spite of the fact that I type in a real password when "NET USE" prompts me for one. I also type one into the "network login" box when I log in to Windows.
Any idea how I persuade Windows to send a password?