Authenticating to IIS Web Servers with Webpage and HTTP Retriever Nodes (401 error)

I am trying to use the Webpage Retriever node to extract a page from an internal IIS server. From a browser, access to the site is authenticated automatically. I have been unable to authenticate using the Webpage Retriever node using basic, digest, and NTLM (Labs) methods. I have enabled the Kerberos config in KNIME Desktop and have an active ticket. However, it does not seem the nodes leverage Kerberos as I still get 401 errors. Looking for suggestions on next steps I can take to resolve.

Thanks,
Sean

Hi Sean,
I think there is a similar problem with the REST nodes: REST Web Service - Authentication Change (3.7 vs 4.1). Let’s see if your problem is solved when we have a solution for that one, ok?
Kind regards,
Alexander

2 Likes

Hi,
a workaround was posted in the topic I linked earlier. Can you try that and see if it solves your problem?
Kind regards,
Alexander