You must add a reference to assembly 'netstandard, Version=2.0.0.0, Culture=neutral

Dev

40 Points

5 Posts

I'm using asp.net mvc application targeting to 4.8. Updated few nuget package and sudden started run time error:

The type 'System.Object' is defined in an assembly that is not referenced. 
You must add a reference to assembly 'netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'.

c#asp.net-mvc visual-studio-community-2019

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Posted On: 16-Jan-2021 06:12

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Priya 1194 Points 33 Posts	Try add netstandard reference in web.config like this:" `<system.web> <compilation debug="true" targetFramework="4.8" > <assemblies> <add assembly="netstandard, Version=2.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51"/> </assemblies> </compilation> <httpRuntime targetFramework="4.8" />` Posted On: 20-Jan-2021 03:10
Dev 40 Points 5 Posts	I removed all packages references in package.json and from .csproj file and worked like charm. Thanks. Posted On: 26-Jan-2021 00:56