Switch from forms to claims-based SWT authentication

If you are upgrading your project from Sitefinity CMS 4.x version to Sitefinity CMS 5.x or above, claims-based authentication will not be applied automatically. To configure your site to use claims-based authentication, perform the following:

1. Login to the backend of your website.
2. Click Administration » Settings » User Authentication.
3. In the dropdown box, select Claims based authentication and click Save changes.
4. Open the web.config file of your project and perform the following transformations:
5. Save and close the web.config file.
6. Restart the application.