can you upload your smb.conf to pastebin.com so vwe vcan have a look?
maybe there’s an error somewhere.
you created a sambauser with
sudo smbpasswd -a pi i guess?
what about changing these settings?
or try like that :
deinstall Samba with
sudo apt-get remove --purge samba - but do a backup of your smb.conf first since this will remove samba completely.
then install samba again with
sudo apt-get install samba and rename the smb.conf to smb.conf.orig and create a new smb.conf withthe following content :
workgroup = HOMENET
netbios name = server
server string = Samba-Server
inferfaces = eth0
encrypt passwords = yes
map to guest = Never
path = /testshare
guest ok = no
browseable = yes
create mask = 0777
directory mask = 0777
then create the directory /testshare with
sudo mkdir -m a=rwx /testshare and create a new smb user with
sudo smbpasswd -a pi (will add user pi with a new passeword for samba purpose)
usually you should be able to get acces to the folder now.