The located assembly's manifest definition does not match the assembly reference

I get the following error:

System.IO.FileLoadException: The located assembly's manifest definition does not match the assembly reference. (Exception from开发者_如何转开发 HRESULT: 0x80131040)

It do not give me any hint of which file it's complaining about. How can I find the assembly that it complains about?

(Yes, there are other questions about the same exception here at SO, but they do not answer my question)

Most likely cause is the application is loading a different version of the assembly from somewhere you are not expecting.

There are a few ways to find out where assembly is loaded from. Best one is to use Sysinternal's ProcessMonitor to see which file it is loading before the error happens.

You may check in Nuget Package Manager (VS2015) to see all the versions of assemblies used by your projects in solution.