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Still Facing QuickBooks Error H505? Here's How to Fix It
Still Facing QuickBooks Error H505? Here's How to Fix It

Still Facing QuickBooks Error H505? Use 855749 2321 our guide to fix server and network issues & restore your multi-user setup quickly & easily.

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Written by ismail habiba
Updated yesterday

QuickBooks Error H505 occurs when your computer is unable to connect to the server, which is necessary for accessing your company file in multi-user mode. This error often indicates an issue with the hosting setup or a network-related problem. If you're facing QuickBooks Error H505, here’s how to troubleshoot and resolve it:

Common Causes of QuickBooks Error H505:

  1. Server Hosting Configuration Issues:

    • The server might not be correctly set up for multi-user mode, causing connection failures.

  2. Firewall and Security Software Conflicts:

    • Firewalls or antivirus programs may block the required ports for QuickBooks to access the company file.

  3. Corrupted Network Data (.ND) Files:

    • Damaged or missing .ND files can prevent the proper connection between workstations and the server.

  4. Damaged QuickBooks Database Server Manager:

    • If the Database Server Manager on the host computer is damaged, it can prevent connections to the company file.

  5. DNS Issues:

    • DNS server settings could be incorrect, hindering the workstations from locating the server hosting the company file.

Steps to Fix QuickBooks Error H505:

1. Check Hosting Setup:

  • Ensure Proper Hosting Configuration:

    • On the host computer, navigate to File > Utilities and ensure the option Host Multi-User Mode is selected.

    • On workstations, choose Stop Hosting Multi-User Mode if it’s available.

2. Check Firewall and Security Settings:

  • Allow QuickBooks Through the Firewall:

    • Ensure that QuickBooks and the required ports (TCP 8019, UDP 56727, etc.) are allowed through your firewall.

    • Consult QuickBooks support or your firewall documentation for detailed instructions on configuring firewall settings.

3. Repair the QuickBooks Database Server Manager:

  • Restart the Database Server Manager:

    • Open QuickBooks Database Server Manager on the host computer, close it, and restart it to ensure it’s working correctly.

4. Rename the .ND Files:

  • Rename the Network Data (.ND) File:

    • Go to the folder where your company file is stored, locate the file with the .ND extension, and rename it by adding .OLD to the end. QuickBooks will generate a new .ND file when you reopen the company file.

5. Verify DNS Settings:

  • Check DNS Server Settings:

    • Verify that the DNS settings on your workstations and server are correctly configured. Use the Ping command to check if the workstations can communicate with the server.

6. Run the QuickBooks File Doctor Tool:

  • Use QuickBooks File Doctor:

    • Download and run the QuickBooks File Doctor tool to automatically detect and fix any network-related issues that could be causing the error.

7. Reboot and Test the Connection:

  • After applying the fixes above, restart both the server and workstations, then test the connection by opening the company file in multi-user mode.

When to Contact QuickBooks Support:

If you’ve tried the above steps and are still facing QuickBooks Error H505, you may need to contact QuickBooks Support for further assistance. They can help you troubleshoot more complex issues, especially if your network configuration or firewall settings require more in-depth fixes.

Final Thoughts:

QuickBooks Error H505 is usually a result of network or server-related issues. By following the steps above, you can typically resolve the error and return to using QuickBooks in multi-user mode. Always ensure you have a backup of your company file before making any significant changes to your system or network settings.

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