To allow anonymous access (not supported on clusters), you must configure NTFS permissions on this folder to grant access ...

To allow anonymous access (not supported on clusters), you must configure NTFS permissions on this folder to grant access to the Everyone group. To configure permissions, use Permissions tab.  Enabling anonymous access to NFS shares also requires enabling the "Let Everyone Include Anonymous Logon" security policy. Making this change to the security profile of your system should be done only if anonymous access is absolutely necessary. To enable this policy, use the Local Security Policy editor.