Using Visual Studio 2015 and trying to get a package from NuGet I was getting 2 errors:-

Install-Package : Too many automatic redirections were attempted.

&

An error occurred while retrieving package metadata for

I noticed there was a update for Visual Studio 2015 NuGet Package Manage for Visual Studio to version 3.1.60724.766 (from current 3.0.60624.657), so I downloaded and installed it.  Same errors.

Fix

In Visual Studio 2015.

Tools Menu -> NuGet Package Manager -> Package Manager Settings

Click Package Sources

Click + sign

Add the following:-

Name: something like NuGet v2

Source: https://www.nuget.org/api/v2/

Untick the current nuget.org so it should look like:-

And now you should be able to install NuGet packages