How can I troubleshoot the Destiny 2 Marmot error code on PC?

For PC users, try these steps: 1) Restart your router and modem. 2) Flush your DNS cache (open Command Prompt as administrator and type 'ipconfig /flushdns'). 3) Verify game file integrity through Steam or Epic Games Launcher. 4) Temporarily disable your firewall or antivirus to see if they're interfering. 5) Consider using a VPN as a temporary workaround, though this isn't a permanent solution.