Source unreachable when using the NuGet Package Manager Console

Question

We are moving our package management from manually updating files to NuGet. I am trying to install older versions of packages to match the one we already have in source cont

Answer 1

In my Package Manager Console i could not see any sources

Going to: Tools -> Options -> Nuget Package Manager -> Package Sources

I found the sources. Unchecking them, and them checking them back made the re-appear in my Package Manager Console