map ubuntu shared folder in windows 7

I have a virtual machine running ubuntu and I am trying to host some files on ubuntu and map the drive in windows PC.

Following the steps here, I am able to see (from windows) the "work" folder after typing in \\ubuntu_ip. But when trying to access or map it with "svc_acct" from windows, I get "0x80070043 error the network name cannot be found". I guess I am not accessing correctly from windows.

samba config:
[work]
path = /home/svc_acct/work
valid users = svc_acct
available = yes
read only = no
browsable = yes
public = yes
writable = yes
force user = svc_acct
create mask = 0777
directory mask = 0777