Windows

• This issue may occur if you are running Windows 7. This platform is no longer supported. You will need to upgrade your Windows installation to a supported version.
  Houdini system requirements

OSX High Sierra (10.13):

• Download the cacert.pem file from https://curl.haxx.se/docs/caextract.html.
  The file is at the top of the page, on the left-hand side.

• Rename the downloaded file to cert.pem and move it to the directory /etc/ssl. You will need elevated privileges to modify the contents in /etc/ssl. The new file will be located as /etc/ssl/cert.pem.

• On OSX, you can find the /etc/ssl directory through: Finder->Go->Go to Folder and type /etc/ssl

• After replacing the system /etc/ssl/cert.pem file with the one you have downloaded:

  • Apprentice: You should be able to launch Apprentice to acquire a license.
  • Indie or Commercial: You should be able to log into the License Administrator to manage licenses.

Another option would be to use the License Administrator from the latest production or daily build of Houdini 17.5.
Download and install Houdini 17.5, minus the License Server component.
You can then use the 17.5 License Administrator (hkey).