Could not load file or assembly System Web WebPages Razor Version 3 0 0 0

Question

I want using external logins so I installed Oauth by package manager    PM gt  Install-Package Microsoft AspNet WebPages OAuth   Then I got this error after installed it then I install razor   PM gt  Install-Package Microsoft AspNet Razor   But I still have this exception  Further more my application is an asp net application and not a MVC application  Thanks for help    FileNotFoundException  Could not load file or assembly  System Web WebPages Razor  Version 3 0 0 0  Culture neutral  PublicKeyToken 31bf3856ad364e35  or one of its dependencies  The system cannot find the file specified      Microsoft Web WebPages OAuth PreApplicationStartCode Start    0

User · Answer

Apologies in advance for this lo-tech suggestion  but another option  which finally worked for me after battling NuGet for several hours  is to re-create a new empty project  Web API in my case  and just copy the guts of your old  now-broken project into the new one  Took me about 15 minutes

User · Answer

Another option is to update the Microsoft AspnNet Mvc NuGet package  Be careful  because NuGet update does not update the Web Config  You should update all previous version numbers to updated number  For example if you update from asp net MVC 4 0 0 0 to 5 0 0 0  then this should be replaced in the Web Config        lt 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  gt         lt 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    gt         lt 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    gt       lt  sectionGroup gt     lt  configSections gt     lt host factoryType  System Web Mvc MvcWebRazorHostFactory  System Web Mvc  Version 5 0 0 0  Culture neutral  PublicKeyToken 31BF3856AD364E35    gt    lt pages     validateRequest  false      pageParserFilterType  System Web Mvc ViewTypeParserFilter  System Web Mvc  Version 5 0 0 0  Culture neutral  PublicKeyToken 31BF3856AD364E35      pageBaseType  System Web Mvc ViewPage  System Web Mvc  Version 5 0 0 0  Culture neutral  PublicKeyToken 31BF3856AD364E35      userControlBaseType  System Web Mvc ViewUserControl  System Web Mvc  Version 5 0 0 0  Culture neutral  PublicKeyToken 31BF3856AD364E35  gt     lt controls gt       lt add assembly  System Web Mvc  Version 5 0 0 0  Culture neutral  PublicKeyToken 31BF3856AD364E35  namespace  System Web Mvc  tagPrefix  mvc    gt     lt  controls gt   lt  pages gt

User · Answer

You have upgraded to Razor 3  Remember that VS 12  until update 4  doesn t support it  Install The Razor 3 from nuget or downgrade it through these step  geekswithblogs net anirugu archive 2013 11 04 how-to-downgrade-razor-3-and-fix-the-issue-that aspx

User · Answer

Update using NuGet Package Manager Console in your Visual Studio Update-Package -reinstall Microsoft AspNet Mvc

[c#] Could not load file or assembly 'System.Web.WebPages.Razor, Version=3.0.0.0

Examples related to c#

Examples related to asp.net

Examples related to razor