Why might the Marionberry error persist even after performing standard router and console restarts?

If standard restarts don't resolve the issue, the problem might be more complex. Potential causes include an ongoing issue with your ISP, outdated router firmware, conflicting software (like a firewall or antivirus) on a PC, or even a physically damaged Ethernet cable. Less commonly, it could indicate a broader issue on Bungie's server side, though Marionberry is typically client-side related.