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

After Upgrading Visual Studio 2015 in September 16, my NuGet.config had been renamed as NuGet_temp.config. I deleted the NuGet.config file and renamed the _temp version as NuGet.Config.

After that all of my packages are showing again.