QuickBooks Error H505 typically arises when users attempt to access a company file located on another computer, causing a disruption in multi-user mode. This error occurs due to improper hosting configuration, firewall restrictions, or missing services like QuickBooks Database Server Manager.

To resolve the issue, ensure hosting is correctly set on the server, configure firewall settings to allow QuickBooks communication, and restart essential services like QBDBMgrN. Additionally, use the QuickBooks File Doctor Tool for automated troubleshooting.

For expert assistance, contact QB Data Service at +1-888-538-1314 for comprehensive support