Vagrant/VirtualBox не подключается (подключение отклонено. Повторная попытка)

Я использую Vagrant 1.7.2 и VirtualBox 4.3.28 (в основном последние сборки на дату) в Windows 8. У меня проблемы с подключением по ssh к виртуальной машине через vagrant up.

Вот сообщение, которое я получаю:

$ vagrant up
Bringing machine 'default' up with 'virtualbox' provider...
==> default: Checking if box 'hashicorp/precise32' is up to date...
==> default: Clearing any previously set forwarded ports...
==> default: Clearing any previously set network interfaces...
==> default: Preparing network interfaces based on configuration...
    default: Adapter 1: nat
==> default: Forwarding ports...
    default: 22 => 2222 (adapter 1)
==> default: Booting VM...
==> default: Waiting for machine to boot. This may take a few minutes...
    default: SSH address: 127.0.0.1:2222
    default: SSH username: vagrant
    default: SSH auth method: private key
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...
    default: Warning: Connection refused. Retrying...

У меня есть ощущение, что это как-то связано с моим закрытым ключом, но я понятия не имею, как это решить.

Вот мой файл Vagrant, который в основном используется по умолчанию:

Vagrant.configure(2) do |config|
    config.vm.box = "hashicorp/precise32"
end