Switching to forms authentication

If your website is in claims based mode of authentication, you can configure it to use the forms based authentication, in the following way:

1. Login to the backend of your website.
2. Click Administration » Settings » User Authentication.
3. In the dropdown box, select Forms authentication (backward compatibility) and click Save changes.
4. Open the web.config file.
5. Under <httpModules> section find and delete <remove name="FormsAuthentication"/>.
6. Under <system.web> section, change <authentication mode="Forms" />.
7. Save and close the web.config.
8. Restart the application.