Você teria que acessar esses computadores diretamente e modificar as permissões nessa pasta específica. Adicione a permissão "Todos" a essa pasta.
1) Right-click the file or folder, and then click Properties.
2) Click the Security tab, and then click Edit.
3) To set permissions for a user that is not listed under Group or user names, click Add, type Everyone as the name of the user or group, click OK, select the permissions as Full control or whatever you need, and then click OK.