MVC Razor intellisense not working - @model does not exist in VS 2015

Upgrading to Visual Studio 2015 can be a hard time

For me, the intellisense in cshtml file was suddenly missing

@model - does not exist....

@Html - HtmlHelper not available....

I tried many things, that you could also try of course

1. Delete your .suo file
2. Devenv.exe /resetuserdata
3. Delete vs 14.0 cache in
   %LocalAppData%\Microsoft\VisualStudio\14.0\ComponentModelCache
4. Update Nuget packages

But for me, the solution was in the world of config

under /Views/ there is a web.config

It must have the latest mvc 5 settings:

 <configSections>

    <sectionGroup name="system.web.webPages.razor" type="System.Web.WebPages.Razor.Configuration.RazorWebSectionGroup, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">

      <section name="host" type="System.Web.WebPages.Razor.Configuration.HostSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />

      <section name="pages" type="System.Web.WebPages.Razor.Configuration.RazorPagesSection, System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" />

    </sectionGroup>

  </configSections>

  <system.web.webPages.razor>

    <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=5.2.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />

    <pages pageBaseType="System.Web.Mvc.WebViewPage">

      <namespaces>

        <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" />

      </namespaces>

    </pages>

  </system.web.webPages.razor>




<appSettings>

    <add key="webpages:Enabled" value="true" />

    <add key="webpages:Version" value="3.0.0.0" />

  </appSettings>

<system.web>

    <pages

      validateRequest="false"

      pageParserFilterType="System.Web.Mvc.ViewTypeParserFilter, System.Web.Mvc, Version=5.2.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"

      pageBaseType="System.Web.Mvc.ViewPage, System.Web.Mvc, Version=5.2.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"

      userControlBaseType="System.Web.Mvc.ViewUserControl, System.Web.Mvc, Version=5.2.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35">

      <controls>

        <add assembly="System.Web.Mvc, Version=5.2.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" namespace="System.Web.Mvc" tagPrefix="mvc" />

      </controls>

    </pages>

  </system.web>

 <system.webServer>

    <validation validateIntegratedModeConfiguration="false" />

    <handlers>

      <remove name="BlockViewHandler"/>

      <add name="BlockViewHandler" path="*" verb="*" preCondition="integratedMode" type="System.Web.HttpNotFoundHandler" />

    </handlers>

  </system.webServer>

But even after that, my intellisense did not work

Then I realised that there is a appsettings.config in the root also...

I updated the

<add key="webpages:Version" value="2.0.0.0" />

to

<add key="webpages:Version" value="3.0.0.0" />

Then it worked! for me at least! :)