Much like the answer provided by Lee, there is one more step that is important for this to work. You will need to go to "Control Panel\Network and Internet\Network and Sharing Center\Advanced sharing settings"
File Sharing you need to go under the "Password protected sharing" section and tick "Turn off password protected sharing" Don't worry other folders you share can still be protected by an account. However without doing this devices like ES File Explorer can't even browse to the folder without some credentials even with it being share with the "Everyone" group.
EDIT: Also check the security tab as well in the general folder settings to ensure the "Everyone" group is also there to read.