curl / Mailing Lists / curl-library / Single Mail
Buy commercial curl support from WolfSSL. We help you work out your issues, debug your libcurl applications, use the API, port to new platforms, add new features and more. With a team lead by the curl founder himself.

windows NTLM auth with sspi enabled fails mysteriously for some customers

From: Zach Hall via curl-library <>
Date: Thu, 27 Feb 2020 10:37:17 -0700

This one is a bit of a shot in the dark, but I am getting pretty desperate
so I will ask it anyway.

In order to get logins with default windows creds working, the previous
team who owned the product I work on changed our curl build to have it
build with command line option ENABLE_SSPI=yes. For our environment and the
vast majority of our customers' environments, this hasn't caused a problem,
However for some it causes login failures. I had one of the customers with
this problem test logging in with a libcurl.dll built with ENABLE_SSPI=no
installed in our install directory and they could login without issue.

Any clue why this might be happening?

-Zach Hall

P.S. We really can't pay you for support...

Received on 2020-02-27