Razor Compiler Warning/Errors - ASP.NET MVC 4 - asp.net-mvc

Question

I have an issue which seems to have been reported here:
Need razor view engine auto-complete to work in a class library?
My issue is the following Warning:
G:\Accountable\Accountable\Views\LedgerUser\EditorTemplates\LedgerServiceViewModel.cshtml:
ASP.NET runtime error: There is no build provider registered for the
extension '.cshtml'. You can register one in the
section in machine.config or web.config.
Make sure is has a BuildProviderAppliesToAttribute attribute which
includes the value 'Web' or 'All'.
This issue is apparent in all my views. Sample images below.
Now all posts and references online that I have found are referencing to adding various Web.config (as mentioned in the previous post) options, but this doesn't seem to work, as I have these configurations defaulted in the project. Here are my Web Configs:
Main Web.config
View root Web Config
I think this issue maybe while im also getting the following compiler errors on the Views:
The name 'Html' does not exist in the current context
What am I doing wrong?

Answer 1

Arrrgghhh i had missed the following from the ROOT Web.config:
<compilation debug="true" targetFramework="4.0">
<!-- New -->
<assemblies>
<add assembly="System.Web.Abstractions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add assembly="System.Web.Helpers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add assembly="System.Web.Routing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add assembly="System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
<add assembly="System.Web.WebPages, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
</assemblies>
</compilation>
This allowed fixed the error and allowed me to use Intellisense within the View.

Answer 2

Putting back the following lines in root Web.config fixed:
<system.web>
<pages>
<namespaces>
<add namespace="System.Web.Helpers" />
<add namespace="System.Web.Mvc" />
<add namespace="System.Web.Mvc.Ajax" />
<add namespace="System.Web.Mvc.Html" />
<add namespace="System.Web.Optimization" />
<add namespace="System.Web.Routing" />
<add namespace="System.Web.WebPages" />
</namespaces>
</pages>
</system.web>

Answer 3

I got it working by simply unloading and reloading the project. All the namespaces above were already there in the root web.config and I was still getting this issue.

Answer 4

Removing the temporary asp.net framework files works for me.
Stop IIS and remove everything under this folder:
C:\Windows\Microsoft.NET\Framework64\[framework version]\Temporary ASP.NET Files
Then restart IIS. Bam!

Answer 5

I tried by restart IIS, removed Temporary ASP.NET Files and changing the compilation tag in the web config file. None of them work for me.
I fixed the issue by removing and adding System.Web.MVC to the project.
In my case Razor syntax are Highlighted in red.