Discuss IIS Unkown Error in the IIS forum on Dev Shed. IIS Unkown Error IIS forum discussing Microsoft's Internet Information Server including its configuration, optimization and other related topics. IIS is the most popular web server for the Windows platform.
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Maybe your website has been hacked and it's a fake message? View your browser source for starters. And when you say the website is working but not via IIS does that mean you've taken a website from another web server and ported it to IIS?