If possible set the same. Net version for all projects. If not at least try to change the Startup project one for me this was the one causing the issues. Update all Newtonsoft. Json versions in all packages. Remove the Newtonsoft. Json assembly from the project reference and add it again. You probably deleted or replaced the dll by accident. Http and System.
Formatting assemblies manually via Add Reference, when I should have added the Microsoft. Client package via NuGet.
See also this answer to another question. You have 2 different versions of JSON. NET library in your solution. To solve this you should upgrade them to latest version.
Follow these steps:. NET package. This is telling you that the assembly loader found a different version of the Newtonsoft. Json assembly, that does not match the reference you created in your project.
To load the assembly correctly, you must either deploy the assembly side by side with your compiled code, or install the correct version of the assembly in the destination machine i. If you want to keep the current solution, and load an assembly with a different version, make sure that the configuration you posted is in the correct. Remember that there is no xpto. Normally adding the binding redirect should solve this problem, but it was not working for me.
After a few hours of banging my head against the wall, I realized that there was an xmlns attribute causing problems in my web. After removing the xmlns attribute from the configuration node in Web.
Open packages. Open solution again and re-install Newtonsoft. Json by Install-Package Newtonsoft. We had the exact same issue that you mentioned.
We're using nunit to run tests through CI, and we have nunit running a file called tests. Each test fixture had their own config file, but when run through the "tests. The solution was to add the binding redirects to a new config file, "tests.
I have got the same type of problem. Finally, execute the following two commands :. You should update the web. When nuget install NewtonSoft update this file including this code. Just check the version of Newtonsoft.
Json Newtonsoft properties. Then you need to add that version in your web config in my case 8. My main project was 4. Net 2. Json couldn't be found" error. I was facing the same error and struggled with it for hours. I had a web API project which is using Newtonsoft.
The unit test project also needed the Newtonsoft. But on adding the link I was getting the above exception.
I finally resolved it by adding the below code snippet in the app. NET Interactive. Copy this into the interactive tool or source code of the script to reference the package. Json as a Cake Addin addin nuget:? Json as a Cake Tool tool nuget:? NETFramework 2. NETFramework 3. NETFramework 4. NET web application via popular identity providers, Core 4. Consumer 4. EntityFramework 5.
Combined 1. NET application that utilizes the Membership system for user ma MSAjax assembly that will automatically register the Microsoft Ajax optimi WebForms assembly that will automatically register the Microsoft Ajax opti SHA eb45eed3beb0d9a2d3b8bed5feb MD5: 4df6ce70c3ab5bee6d SHA cbcfcd85dbc1c82b02eaca9b MD5: cbddc3cc.
SHA 6b0daadc1ad7a0b07f2e48c MD5: 3eaefebd0c1cd2c9. SHA eb9bb0bcba0d04ef09dbab73f. Package Manager. Json -Version 4. Json --version 4. For projects that support PackageReference , copy this XML node into the project file to reference the package.
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