By default, the Trusted Sites zone is very strict. It typically only allows sites using (secure connection).

If you're an administrator, you can also add trusted sites using Group Policy:

The process is straightforward, though slightly hidden due to the modern interface shift toward Edge. Follow these steps:

Modern revisions of Microsoft Edge process local permissions directly through inner browser rules, bypassing historical controls for specific real-time components like scripts, pop-ups, or media exceptions. Adjusting Site Exceptions for Enhanced Security Microsoft Learnhttps://learn.microsoft.com Trusted Sites In Edge Browser - Microsoft Q&A