Predefined type 'System.Object' is not defined or imported .net 4.6

Question

I\'m using MVC 5 and .net 4.6 to create a web API that my mobile app can connect too.

Whenever I build the project I get hundreds of errors telling me that I need to add

Answer 1

In my case, this is different. First check System.Runtime reference is added to your project or not. If it is added to your project, please follow the below steps.

1. Open your Reference from your project and select System.Runtime assembly.
2. Right click on System.Runtime and select property.
3. Change the value of SpecificVersion from False to True.

Note : In my Case I am using Visual Studio 2019 and Project Framework Version - 4.6.2