Recently the URL links in several courses stopped working and we’re receiving this error message. It’s not a iframe issue since the course material was written with the HTML editor, and not iframe. I added the domains to the list just in case, but that didn’t resolve the issue. Any suggestions for how to troubleshoot so users can be directed to external sites?
![](https://uploads-eu-west-1.insided.com/docebosuccess-en/attachment/88b17bb3-8520-4c6f-8ff9-31a336024150.png)