How to enable anonymous Access to SharePoint 2013 Websites
or Anonymous access restrictions is grayed out
Anonymous access is the permission
that every user can able to logon to the
sites without having the credentials. Follow the below steps to enable the
anonymous access.
1. Central Administration->under Application
Management->click on the Manage web applications.
2. Make sure you select the site you want to enable
anonymous access -> click on the Authentication Providers icon.
3. On the Authentication Providers pop-up window click on
the Default zone
4. Under Edit Authentication, check Enable anonymous
access and click Save.
5. Going back to Web Application Management click on the
Anonymous Policy icon.
6. Under Anonymous Access Restrictions select your Zone
and set the Permissions to None – No policy and click Save.
7. Now, web application will allow anonymous access to be
set. So, navigate to your top level site collection for the web application.
Click the Site Actions > Site Settings. Under Users and Permissions click
Site permissions.
8. Under Permission Tools, click Anonymous Access icon
and set the permissions to Entire Web site and click OK.
If you followed these steps
properly you should have now Anonymous Access enabled.