To enable anonymous access for SharePoint 2013 site:

  1. Open SharePoint site on which you want to enable anonymous access.
  2. Navigate to Settings > Site Settings > Site Permissions.
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  3. Click Anonymous Access in the Manage section.
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  4. In the Anonymous Access window, select the parts of your website that you want anonymous users to access.
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To enable anonymous access on a list or library:

Use this procedure only if you have enabled anonymous access on your site as described in the previous procedure and have granted access to either the entire web site or just to lists and libraries, as described in step 4 above.

The following steps can only be performed on a list or library that is using unique permissions.

  1. Open the list or library for which you want to enable anonymous access.
  2. Navigate to List > List Settings.
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  3. Choose Permissions for this list.
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  4. Click Anonymous Access.

  5. In the Anonymous Access window, select the permissions that you want to grant to anonymous users for this list or library.
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    Note: Anonymous access button is not unavailable on the Permissions page if your list or library is inheriting permissions from its parent site. If your list or library is inheriting permissions from the site, you must first break the inheritance from the site. To do so, in the Inheritance section, click Stop Inheriting Permissions.
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    Note: Only the View Item permission is available for libraries. This is to help protect your site from potential script injection attacks.