I just updated an mvc4 project (using vs2012) to mvc5. After having a lot of issues related to dependencies, I finally found this tutorial and straightened things up so that it
The tooltip of the "@model" tag at the very top of my razor view file stated that autofac 3.4.0.0 could not be found. All my projects used Autofac 3.1.5, so I added a redirect in web.config to quickly work around the issue:
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My intellisense was back and I then deferred the final fix to a low prio task :D