Puppet users - May 2014 - SSL error connecting to https://forge.puppetlab.com on fresh install

I installed Puppet 3.5.1 on Windows 7 from the MSI. I've run a few
'puppet
apply' commands and things appear to be working. We are not using a master 
node for our current use case so I haven't set one up. The Windows Puppet 
service is also disabled. When I try to install a module from the Forge I 
get this SSL error:

Error: Could not connect via HTTPS to https://forge.puppetlabs.com
  Unable to verify the SSL certificate
    The certificate may not be signed by a valid CA
    The CA bundle included with OpenSSL may not be valid or up to date

I haven't touched any of the puppet conf yet. Is a master node required to 
install modules? I'm still getting started but from what I've read it
does
not, so I'm a little unsure if this is an error in from MSI or if action is 
required on my part. Thanks in advance.

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