Did you make sure the MBW is on the same workgroup name of your computer? ANd have you tried accessing the MBW from another computer to check if your computer is refusing access?
Have you tried to PING it on command prompt to double check the correct IP address?
1-About the workgroup, yes, just set the name of my homegroup which was confirmed by the webconfig of MBW that it was joined successfully.
2-About the PING, yes, when I PING it it responds perfectly. As I said, I can access to the webconfig, also can access through FTP protocol to the folders, but not able to map the drives as common share folders which some time ago it was working without problems.
3-About seeing it on another computer like common shared folder, I have checked it right now, and yes, I see them…