先在 /etc/sambs/smb.conf 加上

log level = 3 

之後，重啟 nmb/smb server

systemctl restart nmbd
systemctl restart nmbd

看到了 /var/log/samba/log.smbd 中的一段錯誤訊息

2021/04/15 12:11:11.313142, 3] ../lib/util/access.c:365(allow_access)
Allowed connection from 192.168.1.184 (192.168.1.184)
[2021/04/15 12:11:11.323575, 3] ../source3/lib/util_procid.c:54(pid_to_procid)
pid_to_procid: messaging_dgm_get_unique failed: No such file or directory
[2021/04/15 12:11:17.274381, 3] ../lib/util/access.c:365(allow_access)
Allowed connection from 192.168.1.184 (192.168.1.184)
[2021/04/15 12:11:17.289554, 3] ../source3/lib/util_procid.c:54(pid_to_procid)
pid_to_procid: messaging_dgm_get_unique failed: No such file or directory

跟劇此線索找到了有人提到，要修改 Windows Local Security Policy (secpol.msc) , 找到 Security Settings->Local Policies->Security Options->”Network security: LAN Manager authentication level.” Set it to “Send LM & NTLM – use NTLMv2 session security if negotiated.” 或是改 register file

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa]
"LmCompatibilityLevel"=dword:00000001

註：ntlm auth = yes 也要開，修改 /etc/samba/smb.conf ，然後重啟 nmbd/smbd

[global]
ntlm auth = yes

ref.
Samba and ntlm for Windows clients

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