Q:

Could not load file or assembly 'Newtonsoft. Json, Version=10.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed' in Azure Functions

I am refering a C# library project from my Azure Function (Service bus queue trigger).  The library is referencing the Newtonsoft nuget version 10.0.1. 
While running the function locally on my visual studio, it gives this error . 
{"Could not load file or assembly 'Newtonsoft. Json, Version=10.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed' or one of its dependencies.  The system cannot find the file specified. ":"Newtonsoft. Json, Version=10.0.0.0, Culture=neutral, PublicKeyToken=30ad4fe6b2a6aeed"}

I tried downgrading to version 10.0.0, but the issue is there. 
I stumbled upon this issue link : https://github.com/Azure/azure-functions-vs-build-sdk/issues/107.  
And tried downgrading to 9.0.1.  But even then the error still occurs.  
Note: The library project reference several other library projects which are also referencing Newtonsoft.  I am keeping the same version of the nuget all the sub projects. 
How to solve this issue? 

A:

Pointing all the Newtonsoft dlls in all the sub libraries to version to 9.0.1 solved the issue. 