Could not load file or assembly 'System.ValueTuple'

Question

I\'ve got a VS2017 project that compiles to a DLL which is then called by an EXE written by someone else. Both projects target .Net Framework 4.6.2. I rewrote one of my DLL

Answer 1

I faced the same exception when there was a nuget package version mismatch. (In the DLL was 4.3.1 used while in the main program 4.3.0.) I have resolved the issue by upgrading the packages to the same version... Checking and unifying the package versions could hopefully help you as well.