Could not load file or assembly 'System.IdentityModel, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies

Question

I am new to mvc. I just installed the Visual studio 15 and when i create a mvc project and run it without any modification. it gives me the above mentioned error. I did the same thing on another pc and it works but on my system it gives me the error. search for solutions but could not find any specific. so please guide me what to do.

Answer 1

"Could not load file or assembly 'AAAAAAAAAA, Version=6.0.0.0, Culture=neutral, PublicKeyToken=xxxxxxxxxx' or one of its dependencies." is a common error. Try the following methods in order to fix this error:

Method I: Add the following key to the section in your web.config:

<compilation debug="true" targetFramework="4.5" >    
    <assemblies>
      <add assembly="AAAAAAAAAA, Version=4.0.0.0, 
          Culture=neutral, PublicKeyToken=xxxxxxxxxx" />
    </assemblies>
</compilation> 

Method II: If the problem is not solved, try to run this command on PM Console:

Install-Package AAAAAAAAAA

Hope this helps...