Entity Framework4.3 Installation and error (the underlying connection has been closed: failed for SSL/TLS ...) Problem Solving!

The Entity framework is referred to as EF

The step to install EF4.3 is to install vs extension NuGet First, and then use NuGet to install the EF package

After installing NuGet you can install EF and there are two ways to install EF:

1. Using commands

Install-package Entityframework-pre

However, the following error occurred:

2. Use the visualizer, menu bar >> Tools >> Package Manager >> Manage package for solution

The following error is also present

This error occurs because there is only one default after installing the NuGet extension package SourceThe EF package we need to use is not in the default package source, so we're going to add a package source:Open the menu bar >> tools >> Options >> Expand Package Manager >> Select package source input:Name: Enter a randomSource: http://go.microsoft.com/fwlink/?LinkID=206669then choose Add, then use the above two ways to install EF, the problem is solved perfectly!

Note: If the problem persists, select the package source name that you added in the package source (I'm taking the name "EF package").

Entity Framework4.3 Installation and error (the underlying connection has been closed: failed for SSL/TLS ...) Problem Solving!