How to enable anonymous authentication on SharePoint?

Applies to: SharePoint Server 2010Microsoft SharePoint Foundation 2010


It is not supported to enable Anonymous Authentication on a SharePoint web application from the IIS console as shown below.

More Information

Unattended behaviors can occur in such a situation because SharePoint, which is using a SQL database for its configuration, will not be aware of this modification.

IIS Console

It is mandatory to enable the Anonymous Authentication on the zone used by SharePoint to give access to the web application.

SharePoint Zone Configuration

Enabling Anonymous Authentication is not going to give anonymous users access on a site collection till the following configuration is not changed from the permissions settings of the site collection.

SharePoint Site Collection Permissions