How to Enable Anonymous Access For Existing Web Application

In a real-world scenario, one might require to enable anonymous access to an existing web application.
 
 How to do that?
 

 Solution
 

 Open Central Administration then slelct "Manage Web Applications".

Manage Web Applications
 
 Select the web application and choose "Authentication Providers" from the ribbon.

Authentication Providers
 
 In the dialog, click on the default item.

default item
 
 You will get the following dialog.

dialog
 
 Check the "Enable anonymous access" checkbox and click the "OK" button.
 
 Your site is ready with Anonymous Access. Open a new browser window and test it.

Note
 
 When creating a web application, we can choose the Anonymous option from the wizard itself.
 
 References
 
 
Grant permissions to anonymous users
 
 Summary
 

 In this article we explored how to enable Anonymous access for an existing web application.