Could not load file or assembly 'Newtonsoft.Json'

Question

I was trying to launch my web application to Smarterasp.net server, but the following error pops up.

"Could not load file or assembly 'Newtonsoft.Json' or one of its dependencies. This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded.

"

Hope there's someone help.

Very much appreciated.

Bikesh Srivastava · Answer

check your reference  or publish again...it may be version problem also..

nidhal hameed · Answer

i contact the support staff of my hosting server and they update the Application Pool toNET CLR version v4.0.30319 then my site worked perfectly. i appreciate your interesting

Manas Mohapatra · Answer

Delete all the reference from your project. And load the dll from Nuget package. Follow below link it may help you: http://www.c-sharpcorner.com/UploadFile/manas1/json-serialization-and-deserialization-using-json-net-librar/

Ritesh Singh · Answer

Hi It can be solved by updating the Newtonsoft.Json to the latest version using Update-Package Newtonsoft.Json And Add below in Web.config: Note: Please accept the answer if it help you and answer your question. Thanks & Regards Ritesh

nidhal hameed · Answer

Manas Mohapatra i am appreciated for ur reply i used .Net Framework version 4 and Newtonsoft.json.dll version 6.0.0.1. i'll try to downgrade my Newton.json version and see the result

Manas Mohapatra · Answer

It is mostly your .Net framework version and Newtonsoft.Json dll runtime version is different. So at the runtime it throws error. Either you need to upgrade your .Net framework version or you have to refer downgrade your Newton.Json dll version. http://stackoverflow.com/questions/5138735/error-this-assembly-is-built-by-a-runtime-newer-than-the-currently-loaded-runti