You are trying to view a Procore Certification lesson and you instead see the error "Missing authentication cookie".
This error means your browser or network settings are blocking 3rd party cookies on your computer or mobile device.
You will need to add the domain [*.]sj-cdn.net as a trusted site in your browser's privacy settings.
If you use a Chrome browser, you can follow the steps below. To learn how to add domains to your privacy settings on other browsers, see Skilljar's article Troubleshooting Browser Issues with Cookies.
If you use a Safari browser on an iOS mobile device, you'll need to turn off the setting 'Prevent Cross-Site Tracking'. To learn how, click here.