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I have a plesk cloud server set up with a demo version of my site.

I can access this from most computers by hitting the correct URL and authenticating myself using the required windows credentials.

From some machines however I am receiving a 401 Unauthorized message when trying to hit the site.

The only thing I can think off is that it maybe going through a proxy on these machines but can;t say for certain and it is just a setting in IIS but I have absolutely no idea which setting?

The site is as ASP.NET application running under IIS7

Does anyone have any idea?

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up vote 0 down vote accepted

Windows Authentication on IIS will never work over proxies apparently.....

See here

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