Server does not support any of the pysmb dialects. Please email pysmb to add in support for your OS

[RogueCultivators]

I want to support timemachine, but the protocol is at least smb2, but using pysmb cannot support this protocol

[RoyWiggins]

we've found that sometimes setting min protocol = SMB2 ends up setting SMB2.1 as the minimum version that Samba will negotiate. pysmb doesn't support SMB2.1 (sometimes denoted 2_10). Explicitly setting min protocol = SMB2_02 fixed it for us.

You can test this at the command line by setting the maximum version smbclient will negotiate. For pysmb to work, the server needs to negotiate SMB2_02 (which is SMB version 2.0.2):

smbclient -m SMB2_02 -U <user> -c "ls" <server>

[NicholasGGW]

we've found that sometimes setting min protocol = SMB2 ends up setting SMB2.1 as the minimum version that Samba will negotiate. pysmb doesn't support SMB2.1 (sometimes denoted 2_10). Explicitly setting min protocol = SMB2_02 fixed it for us.我们发现有时设置 min protocol = SMB2 会让 SMB2.1 成为 Samba 协商的最小版本。pysmb 不支持 SMB2.1（有时表示为 2_10）。明确设置最小协议 = SMB2_02 解决了问题。

You can test this at the command line by setting the maximum version smbclient will negotiate. For pysmb to work, the server needs to negotiate SMB2_02 (which is SMB version 2.0.2):你可以在命令行里测试，设置 smbclient 协商的最大版本。为了让 pysmb 正常工作，服务器需要协商SMB2_02（即 SMB 2.0.2 版本）：

smbclient -m SMB2_02 -U <user> -c "ls" <server>

this worked!when i change/etc/samba/smb.conf``the min protocol to min protocol = SMB2_02` and restart smbd nmbd service.I can connect use pysmb to connect my Ubuntu samba.Thx!!!