first ano OS? baka magkaiba OS, may gagawin ka pang additional tweak sa settings pag iba OS ng isa
second, ano firewall mo? check mo settings. baka nakaenable ang protection that doesn't allow network traffic (i.e yung defense+ ng comodo). if you are using outpost suite free, then hindi mo pwede change ang setting so just disable it temporarily when accessing files, then turn on nalang ulit later