In finder, select Menu Go / Connect to server (last option)
you can open it with [Cmd]+[K]


of course, use CIFS instead of SMB.
other explanations from
http://cammodude.blogspot.frWorkaround Option 1:
To force your connection to be SMB1, simply type cifs://servername instead of smb://servername when connecting to a Windows or NAS share. This is by far easier and requires no real configuration changes.
Workaround Option 2:
To force all connections to be SMB1:
Open A terminal window
paste in the following line followed by the return key(should be all on one line):
echo "[default]" >> ~/Library/Preferences/nsmb.conf; echo "smb_neg=smb1_only" >> ~/Library/Preferences/nsmb.conf
What the command does:
Creates a file called nsmb.conf in your home directory at the path ~/Library/Preferences/nsmb.conf.
Adds directives to force SMB connections to use the SMB1 protocol. This is slower but stable.
How to remove the workaround:
Open a terminal window
paste in the following at the prompt and then hit the return button:
rm ~/Library/Preferences/nsmb.conf
Notes:
Its a good idea to restart your mac before trying to connect to your storage again. This will clear any hung SMB processes from previous attempts to connect to your storage before implementing this workaround.