Visual Studio 2010 nuget error: The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel

Question

Whenever I\'m trying to install something or even just list the packages I get this error \"The underlying connection was closed: Could not establish trust relationship for

Answer 1

Go to VS2012 -> Tools -> Library Package Manager -> Package Manager Settings Choose Package Manager -> Package Sources.

1. Add a new package source as: Name= NugetSource Source= http://packages.nuget.org/v1/FeedService.svc/
2. Move Up the newly added package source to first position.
3. UnCheck existing "Nuget official package source"
4. Restart VS2012.

This is working on my machine.