Could not load file or assembly 'EntityFramework, Version=6

jigar patel

8y5.3k.NET

Could not load file or assembly 'EntityFramework, Version=6 in windows server 2012 R2.

>how to solve?

Could not load file or assembly 'EntityFramework' or one of its dependencies. Strong name signature could not be verified. The assembly may have been tampered with, or it was delay signed but not fully signed with the correct private key. (Exception from HRESULT: 0x80131045)

10 Replies

Know the answer? Post it — somebody with the same question will find it here.

Piyush Agarwal8y ago
Seems to be the issue with the framework version itself.

I also faced this issue but when i changed the version it worked like a charm. Hope it works for you too.
0
Nanddeep Nachan8y ago
In Visual Studio, Right click on your project click Publish
Select local folder to publish
Copy the published files at local folder to your remote IIS website
+1
jigar patel8y ago
this project publish working in local IIS server but not working in client-server.
And I have also Re-install Entity Framework 6.0 but not working...
+1
Manav Pandya8y ago
Hello

I have provided solution already to you

Just try to remove reference from your project and build the project

Than just you need to add newer version of EF

Thanks
+1
Nanddeep Nachan8y ago
Try below:
Remove the reference of EntityFramework dll
Add it back as Nuget package from Visual Studio
Tools > Nuget Package Manager > Package Manager Console
PM> install-package entityframework -version 6.0.0.0
+1
jigar patel8y ago
please check
+1
Nanddeep Nachan8y ago
The version seems correct.

Try by adding below bindingRedirect to you web.config
<runtime>
    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
    <dependentAssembly>
      <assemblyIdentity name="EntityFramework" publicKeyToken="b77a5c561934e089" />
      <bindingRedirect oldVersion="0.0.0.0-5.0.0.0" newVersion="6.0.0.0" />
    dependentAssembly>
    assemblyBinding>
  runtime>
+2
jigar patel8y ago
please check here any seeting.
+1
Nanddeep Nachan8y ago
If you are using the Nuget Package Manager, try to update the EF version

In VS
Toos > Nuget Package Manager > Package Manager Console

PM> install-package entityframework -version 6.0.0.0

To update
PM> Update-Package entityframework
+3
Manav Pandya8y ago
Hello

Well this error occur mostly for versioning problem

Try some solution like :

1 . Check the version of .NET framework installed

- Make sure you have proper DLL installed in your machine

2 . Try to remove reference of entity framework 6.0 and reinstall it than build it

Let me know what happen afterwards

Thanks
+3