On Thu, 2018-01-25 at 20:51 +0800, Dmitry Timoshkov wrote:
Sure, I can take a look. Can you show me how to reproduce your failure?
Just run the tester, type http://wintest2.test.local in the "Url:" field and press "Test" button. Make sure that you have a valid TGT in the cache. (I assume that SPN "HTTP/wintest2.test.local" from the log you've provided ealier exists on the server, otherwise you may need to list available SPNs on the Windows side using 'setspn -T yourdomain.com - Q */*' and find one starting with HTTP/ prefix).
The tool expects a web server with a specific configuration. I installed IIS 7.0, added the 'Windows Authentication' feature and enabled it for the test site.
It turns out that it's testing the Negotiate provider, which doesn't do the same three-leg authentication as the Kerberos provider.