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Download of Sophos Anti-Virus for Mac from Company webcid fails with Error 404.3 reported.
First seen in Sophos Anti-Virus for Mac OS X 7.3.3
When Internet Information Services (IIS) delivers a Web page to a client Web browser, it also sends the MIME type of the data it is sending. If there is an attached or embedded file in a specific format, IIS tells the client application the MIME type of the embedded or attached file. The client application then knows how to process or display the data being received from IIS. IIS returns error 404.3 if a client request refers to a file name extension that is not defined in the MIME types.
If you need to configure MIME types for Internet Information Services. For further information see article 61560
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