[url=https://help.bungie.net/hc/en-us/articles/360049199051]Clearing the console cache[/url] by powering down and leaving the hardware unplugged for at least 5 minutes, or [url=https://support.steampowered.com/kb_article.php?ref=3134-TIAL-4638&l=]clearing the Download Cache[/url] and verifying the game files via Steam, could potentially help correct these kinds of issues. Are you encountering any specific error messages, and have you followed any steps in the associated Help articles to troubleshoot your issue? You can also review the [url=https://www.bungie.net/en/Help/Troubleshoot?oid=12915]Network Troubleshooting Guide[/url] for general tips on how to improve your connection to other players. Switching from WiFi to a wired Ethernet cable, or making sure your [url=https://www.bungie.net/en/Help/Troubleshoot?oid=13610#NATtypes]NAT is properly configured[/url] can help reduce the number of problems caused by your network connection. One thing to keep in mind is that you should only have UPnP enabled, port forwarding configured, or your console/PC in the DMZ; using more than one solution may cause conflicts.