Not understanding why WinHTTP does NOT authenticate certain HTTPS resource

Question

I\'d be extremely grateful for any kind of help that may help me resolving the problem.

From Excel VBA code I need to download & parse CSV file from HTTPS site h

Answer 1

The logon at https://redmine.itransition.com/ is just an HTML form that posts a username & password to a script at /login.

This is not compatible with SetCredentials which is designed for server based authentication schemes like basic/digest/ntlm.

You need to load that page with no credentials, grab what looks like the volatile field authenticity_token from the generated form & post that along with username & password to /login.

If its a session based system it will response with the set-cookie header + data you need to use in subsequent request.