I've created a new application under my Default Web Site with the IIS manager in order to set up Bugzilla, and according to the instructions here: https://bugzilla.readthedocs.org/en/latest/installing/iis.html#iis I supposed to add something to the Default Document, which isn't exist at all.
I'm running on Windows 7 Ultimate and using IIS 7.5, and according to the official site - http://www.iis.net/configreference/system.webserver/defaultdocument - this version of IIS includes the Default Document. Also the guide is based on exactly my version of Windows. I'm running the IIS manager as administrator.
I can't find any similar problem to the one I face in Stack Overflow or in Google. Any YouTube or Google guide I watched had this Defualt Document in the home pane.
(Reposting my comment as an Answer)
Ensure that all of the options under "Add Features to Windows" > IIS are selected. Do not accept the defaults as most options are not selected by default.
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