“Value does not fall within the expected range” when trying to add a reference in a project

Question

Suddenly I am getting this error \"Value does not fall within the expected range\" whenever I try to add a reference to any project. This also happens with a new blank proje

Answer 1

In my case it was simple, if the file is open and then I run it, it will run. If the file is closed and then I run it by right clicking from the "Solution Explorer", then it throws the error you mentioned. So, simple steps: In the Solution Explorer,

1. Double click on the file and open it
2. Right click on the file and select "Start with Debugging" or "Start without Debugging"