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https://issues.apache.org/jira/browse/HTTPCLIENT-1266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13510359#comment-13510359
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Karl Wright commented on HTTPCLIENT-1266:
-----------------------------------------
I should also mention that this has an excellent chance of fixing
HTTPCLIENT-1080 and HTTPCLIENT-1040, although I do not have the means of
testing all configurations here.
> Flag issues in NTLM implementation prevent authentication on some servers
> -------------------------------------------------------------------------
>
> Key: HTTPCLIENT-1266
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1266
> Project: HttpComponents HttpClient
> Issue Type: Bug
> Components: HttpAuth
> Affects Versions: 4.2.2
> Reporter: Karl Wright
> Fix For: Future
>
> Attachments: HTTPCLIENT-1266.patch
>
>
> At the ManifoldCF project, we've recently encountered two SharePoint servers
> (Windows 2008 Server R2) which seem to be configured in a way that the
> connector cannot authenticate with them using httpcomponents NTLM. It's
> worth noting that cURL succeeds, so the NTLM setup is apparently reasonable.
> Furthermore, the mcf patched version of commons-httpclient also fails in
> exactly the same way, so it looks like a long-standing issue.
> Working through the problem, it appears that the NTLM flags httpclient sends
> are, in some cases, inconsistent with the data we include. I am working on a
> httpclient patch, which I hope to be able to exercise in one of the client
> situations within the next week or two.
> Please see CONNECTORS-572 for details and research results.
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