Home Network computer not giving access

I have a wireless home network and one of my computers will not let the others access the shared files. I can access all the other computers shared files thru this one but noone can access this ones files. This computer does not show up when my network places is opened on any computer but is listed when I click View workgroup computers. After clicking the icon for this computer I get an error saying //Kelsey1 is not accessible you might not have permission to use this network resource. I’ve turned off all firewalls and allowed the whole C drive to be shared. Any suggestions. I’m sure it’s simple.