VS2015 nuget package manager not finding packages

Question

I installed VS2015 Update 2 and now nuget package manager does not find any packages outside of the \"Microsoft and .net\" package source. It looks like the nuget package so

Answer 1

I am using Visual Studio 2015 Update 2 and had the Original Poster's issue. My package source config file was not deleted but the nuget source was set to https://api.nuget.org/v3/index.json. I had to manually open the config file and change the URL to http://api.nuget.org/v3/index.json in order to get packages to appear. However, I got errors when attempting to download the package I needed. So finally I checked for updates, saw Visual Studio 2015 Update 3, installed it, and now I can finally see the packages, download and install them (using the http address - the https did not work)!