Problem accessing smb share since change to Windows 8

Hy,

I have a smb share folder on my router (I connect a pen and is shared in the network), with no password.

I am able to access from Windows 7 and Linux, but not from Windows 8.

The reported error is:

The device or resource (SERVER) is not set up to accept connections on port "The File and printer sharing (SMB)".

Which is obviously wrong, since I can access it from other OS.

How can I solve this or get more information on the underlying issue.

I've read several threads in here about similar problems, but nothing worked in my case (services are running, smb-cifs is active and there's no error about IPRStackSize and I turned off firewall and antivirus).

Thanks in advance