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Is it possible to use Safari4 with an IIS hosted Intranet site that uses IntegratedSecurity (NTLM)? InternetExplorer and Firefox are capable of dealing with it. I couldn't find a way to get it working with Safari though.

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up vote 3 down vote accepted

Short answer. No

The webkit engine does not have a way to deal with NTLM as yet, and there are no plans as far as a I am aware for this.

SharePoint has built a workaround for this in the way they handle cookies in SP2 and in 2010 for example, to allow the server to 'think' that the browser is NTLM authenticated.

I have been investigating this for the last 6 months, we have 150+ Mac users that need access to SharePoint for example, and Safari is my personal favorite browser

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thanks. But why does firefox have some kind of support for it? – Johannes Rudolph Sep 15 '09 at 13:38
Firefox is not based on WebKit, and it started having a bigger corporate appeal. Safari is not considered a corporate browser. That would be my guess, no one would know for certain why unless they wrote the code. – BinaryMisfit Sep 15 '09 at 15:05

The current version of Safari (5.0.5) does have support for IIS using Windows Integrated Security.

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Hi Brian. That sounds great. Have you any references? If safari supports it, I wonder whether Chrome would have it too. – Johannes Rudolph Jun 27 '11 at 19:30
No official references. I just tested Safari on an internal site I am developing for my company and it works. In Safari and Firefox users get prompted for their username/password and have to enter their username like '<domain>\<username>'. The current version of Chrome works as well without prompting for a username/password. – Brian Cauthon Jun 28 '11 at 16:28

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