ContributionsMost RecentMost LikesSolutionsRe: ReadyAPI throws 401 unauthorized error when accessing kerberos authenticated wsdl. Hi Sonya, No I'm still having the issue after updating to ReadyAPI 3. I still don't see the Authorization header in the Raw request tab. I also do have the check mark box checked on Authenticate Preemptively in my Preferences. Let me know if there is anything else I can do such as looking at a log file or something. Thanks in advance. Re: ReadyAPI throws 401 unauthorized error when accessing kerberos authenticated wsdl. Hi Anastasia, Yes, I'm using SPNEGO/Kerberos (Built-in) as my authorization. I know the request is working because when I remove the Kerberos ticket from my user directory the request fails. Re: ReadyAPI throws 401 unauthorized error when accessing kerberos authenticated wsdl. Hi Anastasia, I enabled that option but I still don't see the Authentication header under the Raw tab?