XP Win2003 computer cannot connect to Samba shared directory
Starting from Samba 4.5, the default value of NTLM auth parameter changes from "yes" to "no". As a result, clients using NTLM level LAN Manager authentication are not allowed to log in to Samba server by default. The affected clients include Windows XP, windows 2003, etc.
Solution (either can be solved):
1. Samba server smb.conf Restart the SMB service after adding "NTLM auth = yes" in the configuration file.
2. The Windows XP client modifies the local security settings, security options, and the value of "network security: LAN Manager authentication level" to "send NTLMv2 response only".
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https://www.cnblogs.com/awakenedy/articles/11150049.html
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My solution :
[global]
NTLM auth = yes
min protocol = NT1