How can an unauthenticated user access a windows share?

Summary of steps:

• Adding Everyone, Guest and ANONYMOUS LOGON to the permissions of the share.
• Open the Group Policy Editor (e.g. by running gpedit.msc)
  • Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options
  • Accounts: Guest account status: Enabled
  • Network access: Let Everyone permissions apply to anonymous users: Enabled
  • Network access: Restrict anonymous access to Named Pipes and Shares: Disabled
  • Network access: Shares that can be accessed anonymously: YOUR_SHARE_NAME
  • Network access: Sharing and security model for local account from “Classic-local users authenticate as themselves” to “Guest only-local users authenticate as Guest”.