If you are using Edge on your Mac:

Edge works very similarly to Chrome:

Third-party cookies are small pieces of data placed by websites other than the one you’re visiting. They’re often used for login persistence, embedded content (like maps or videos), and personalized advertising. While many modern browsers block them by default for privacy reasons, you may need to enable them temporarily to access certain services (e.g., single sign-on portals, payment gateways, or legacy web apps).

Enabling third-party cookies can increase online tracking. After you’ve completed the task that required them, consider re-blocking them for better privacy.