Random HTTP Error 403.14 - Forbidden

Random HTTP Error 403.14 - Forbidden

Randomly while coding an ASP.NET MVC site I started getting HTTP Error
403.14 - Forbidden errors, and when going to specific pages
("/Views/Default/Index.cshtml"), I get
The resource cannot be found. Description: HTTP 404. The resource you are
looking for (or one of its dependencies) could have been removed, had its
name changed, or is temporarily unavailable. Please review the following
URL and make sure that it is spelled correctly.
Requested URL: /Views/Default/Index.cshtml
Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET
Version:4.0.30319.32559
Which I guess means at least ASP.NET is being loaded, but why won't it
recognize the page? I've tried so many reccomendations online, even went
as far as removing the entry from IIS Express, then re-adding it through
VS, copying the web.config from a working site to it, etc. Nothing seems
to work - and it's only this one site. If I set directoryBrowse to true, I
can get so far as a listing of all the pages & directories in my root. I
can visit any of the directories except /Views/, which throws the same
Resource can not be found error as above. I've also added directoryBrowse
as true to the Web.config in /Views/, but to no avail.
Running the recommendation @ http error 403.14- forbidden returns:
Microsoft (R) ASP.NET RegIIS version 4.0.30319.32559 Administration
utility to install and uninstall ASP.NET on the local machine. Copyright
(C) Microsoft Corporation. All rights reserved. Start installing ASP.NET
(4.0.30319.32559). This option is not supported on this version of the
operating system. Administr ators should instead install/uninstall ASP.NET
4.5 with IIS8 using the "Turn Win dows Features On/Off" dialog, the Server
Manager management tool, or the dism.e xe command line tool. For more
details please see http://go.microsoft.com/fwlin k/?LinkID=216771.
Finished installing ASP.NET (4.0.30319.32559).
I'm on Windows 8 with Visual Studio 2013 preview, and this has been
working ever since about an hour ago, where it randomly started happening.
I have a Global.asax file, and everything seems to be right (though
obviously there's something off). I've getted the latest checkin to a new
folder and ran from there, same problem. This is only one site, a site
that was working perfectly just two hours ago. The only thing I can think
of was that I was editing the routes when this happened, but I've changed
the routes right back to what they were before and I'm having the same
problem.
I'm at a complete loss as to what's happening, can anyone provide any kind
of guidance? I'm willing to try/do/test whatever you need, I'd just like
to figure out what's happening. Thank you so much, hopefully someone can
figure out what's happening (and sorry about the lack of info on what I've
tested and stuff - literally everything I saw in the past hour and a half
of searching I've tried).