Vagrant 1.7.4 on Windows 8.1

Hello I would like to ask how to fix the curl ssl certificate when running the command vagrant box add laravel/homestead.

$ vagrant box add laravel/homestead
The box 'laravel/homestead' 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/laravel/homestead"]
Error: SSL certificate problem: unable to get local issuer certificate
More details here: http://curl.haxx.se/docs/sslcerts.html

curl performs SSL certificate verification by default, using a "bundle"
 of Certificate Authority (CA) public keys (CA certs). If the default
 bundle file isn't adequate, you can specify an alternate file
 using the --cacert option.
If this HTTPS server uses a certificate signed by a CA represented in
 the bundle, the certificate verification probably failed due to a
 problem with the certificate (it might be expired, or the name might
 not match the domain name in the URL).
If you'd like to turn off curl's verification of the certificate, use
 the -k (or --insecure) option.

I'm new using virtualbox, vagrant and homestead. I already try googling for I think 2 days now and still getting that error. I also tried clean format of my windows but still no luck. Thank you.

FYI: Virtualbox v.5.0.8, Vagrant v.1.7.4, Git v.2.6.2 [MINGW64]