I actually work on Windows and don't have this issue. Also, I click that link and it works just fine. Please check your firewall and network settings to make sure you can access the website.

I'm having the same problem. I can reach the URL via web browser. Vagrant cannot. I am behind a corporate firewall. I'm having trouble finding a solution for setting Vagrant to work with our firewall.

@steveo250k did you try to setup the proxy on the command line ?

I don't think so, but you gave me some more keywords to search on. I found this:
c:\Applications\Vagrant\precise64>vagrant plugin list
vagrant-login (1.0.1, system)
vagrant-share (1.1.0, system)

and notice there is no vagrant-proxyconf plugin which I assume I need.

So I ran:
c:\Applications\Vagrant\precise64>vagrant plugin install vagrant-proxyconf
Installing the 'vagrant-proxyconf' plugin. This can take a few minutes...
C:/Applications/Vagrant/embedded/lib/ruby/2.0.0/net/http/response.rb:119:in error!': 405 "Method Not Allowed" (Net::HTTPServerException) from C:/Applications/Vagrant/embedded/lib/ruby/2.0.0/net/http/response.rb:128:invalue'
from C:/Applications/Vagrant/embedded/lib/ruby/2.0.0/net/http.rb:913:in connect' from C:/Applications/Vagrant/embedded/lib/ruby/2.0.0/net/http.rb:862:indo_start'
from C:/Applications/Vagrant/embedded/lib/ruby/2.0.0/net/http.rb:857:in start' from C:/Applications/Vagrant/embedded/lib/ruby/2.0.0/rubygems/remote_fetcher.rb:415:inconnection_for'

So now the question is why can't I install vagrant-proxyconf?

Update:
I had HTTP_PROXY and HTTPS_PROXY configured wrong. With the correct configuration I am able to install the vagrant-proxyconf
c:\Applications\Vagrant>vagrant plugin list
vagrant-login (1.0.1, system)
vagrant-proxyconf (1.3.2)
vagrant-share (1.1.1, system)

This also means I'm able to connect to the internet via vagrant. But I'm still getting this error:
c:\Applications\Vagrant>vagrant up
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Box 'hashicorp/precise32' could not be found. Attempting to find and install...
default: Box Provider: virtualbox
default: Box Version: >= 0
The box 'hashicorp/precise32' could not be found or
could not be accessed in the remote catalog. If this is a private
box on Vagrant Cloud, please verify you're logged in via
vagrant login. Also, please double-check the name. The expanded
URL and error message are shown below:

URL: ["https://vagrantcloud.com/hashicorp/precise32"]
Error: Could not resolve host: (nil); Host not found

if those are environment variable can you try to set:

export http_proxy=
export https_proxy=
export HTTP_PROXY=
export HTTPS_PROXY=

and also try

vagrant box add hashicorp/precise32

On Fri, Sep 5, 2014 at 12:44 AM, steveo250k notifications@github.com
wrote:

Update:
I had HTTP_PROXY and HTTPS_PROXY configured wrong. With the correct
configuration I am able to install the vagrant-proxyconf
c:\Applications\Vagrant>vagrant plugin list
vagrant-login (1.0.1, system)
vagrant-proxyconf (1.3.2)
vagrant-share (1.1.1, system)

This also means I'm able to connect to the internet via vagrant. But I'm
still getting this error:
c:\Applications\Vagrant>vagrant up
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Box 'hashicorp/precise32' could not be found. Attempting to
find and install...
default: Box Provider: virtualbox
default: Box Version: >= 0
The box 'hashicorp/precise32' could not be found or
could not be accessed in the remote catalog. If this is a private
box on Vagrant Cloud, please verify you're logged in via
vagrant login. Also, please double-check the name. The expanded
URL and error message are shown below:

URL: ["https://vagrantcloud.com/hashicorp/precise32"]
Error: Could not resolve host: (nil); Host not found

—
Reply to this email directly or view it on GitHub
#3586 (comment).

Running vagrant in a CMD terminal on Windows 7, I had the same problem with a corporate proxy. I set both HTTP_PROXY and HTTPS_PROXY, and then "vagrant box add ubuntu/trusty64" was successful.

i had also this error
Error: Failed connect to atlas.hashicorp.com:443; No error
I just ran the CMD as administrator after setting HTTP proxy and it worked for me

Had the same issue;
figured out the exact issue (in correct proxy) by using --debug option.

in my case adding the port explicitly to the HTTP_PROXY/HTTPS_PROXY worked.
ex: set http_proxy=http://192.168.x.x:80

i am having the same issue. I was able to download the precise64,box from my corporate desktop, but my vagrant comand fails. i had setup the http_proxy as HTTP_PROXY'"http://hproxy.hh.local:3128" in system variables in a windows 7 machine.

I was facing the same issue in Windows 8.

C:\Users\workspace\bosh-lite>vagrant up
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Box 'cloudfoundry/bosh-lite' could not be found. Attempting to find and install...
default: Box Provider: virtualbox
default: Box Version: 9000.69.0
The box 'cloudfoundry/bosh-lite' could not be found or
could not be accessed in the remote catalog. If this is a private
box on HashiCorp's Atlas, please verify you're logged in via
vagrant login. Also, please double-check the name. The expanded
URL and error message are shown below:

URL: ["https://atlas.hashicorp.com/cloudfoundry/bosh-lite"]
Error: Failed connect to atlas.hashicorp.com:443; No error

setting the http_proxy and https_proxy from command line fixed the issue.

C:\Users\workspace\bosh-lite>set http_proxy=http://[corporate proxy]:8080

C:\Users\workspace\bosh-lite>set https_proxy=http://[corporate proxy]:8080

Same case for me , the HTTP / HTTPS proxy setting worked.
From the command line do set HTTP_PROXY= and set HTTPS_PROXY=

how do you set port? via command git

SOLUTION FOR USERS WITH DIRECT CONNECTION TO INTERNET:

Go to Mu$tdie firewall settings, add allowing rules for:
C:\HashiCorp\Vagrant\embedded\bin\curl.exe
C:\HashiCorp\Vagrant\bin\vagrant.exe