C:\Users\irfan>vagrant up
C:/Users/irfan/Vagrantfile:1: warning: encountered \r in middle of line, treated
 as a mere space
C:/Users/irfan/Vagrantfile:2: warning: encountered \r in middle of line, treated
 as a mere space
C:/Users/irfan/Vagrantfile:3: warning: encountered \r in middle of line, treated
 as a mere space
C:/Users/irfan/Vagrantfile:4: warning: encountered \r in middle of line, treated
 as a mere space
==>  Provider 'virtualbox' not found. We'll automatically install it now...
     The installation process will start below. Human interaction may be
     required at some points. If you're uncomfortable with automatically
     installing this provider, you can safely Ctrl-C this process and install
     it manually.
==>  Downloading VirtualBox 5.0.10...
     This may not be the latest version of VirtualBox, but it is a version
     that is known to work well. Over time, we'll update the version that
     is installed.
An error occurred while downloading the remote file. The error
message, if any, is reproduced below. Please fix this error and try
again.