Hi @Luiz Gouvea ,
As a workaround, you could extend the web application using Kerberos authentication to another IIS web site. Then for the extended web application, you could choose windows NTLM authentication.
To extend the web application: go to Central Administration-> Application Management-> Manage web applications, selcect the web application and click extend button in the ribbon. Read here for more: extend-a-claims-based-web-application
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