Guide to Resolve H505 Error Code in Quickbooks

This post was most recently updated on February 5th, 2023

If you encounter a Quickbooks error, it is recommended that you follow the on-screen instructions carefully and take note of the error code and message. This information will help you in your troubleshooting efforts. You can also try restarting your computer, checking your internet connection, and verifying that the Quickbooks software is fully updated to the latest version. If these basic steps do not resolve the issue, you can consult Quickbooks support resources such as online forums, support articles, and contact Quickbooks customer support directly. In some cases, the error may indicate a more serious issue, such as damage to your Quickbooks company file. If this is the case, you may need to restore a backup of the company file or reach out to Quickbooks technical support for further assistance.

What is Quickbooks Error Code H505 ?

H505 Error Code is a message displayed by QuickBooks software indicating a network connectivity issue with the QuickBooks company file. This error can occur when the software is unable to access the company file due to incorrect network setup, firewall restrictions, or incorrect login credentials. This error can be resolved by verifying network setup, ensuring that all network ports required by QuickBooks are open, and by making sure that the login credentials are entered correctly. Other troubleshooting steps include disabling any anti-virus or firewall software temporarily, repairing or reinstalling QuickBooks, and using QuickBooks File Doctor to diagnose and resolve the issue.

Causes of Quickbooks H505 Error Code

The causes of the H505 Error Code in QuickBooks can include:

  • Incorrect network setup on the hosting computer.
  • Firewall or antivirus software blocking QuickBooks access to the company file.
  • Incorrect login credentials or permissions.
  • Blocked or closed network ports required for QuickBooks.
  • Corrupted or damaged .ND file on the hosting computer.
  • Incorrect hosting configuration for QuickBooks.
  • Incompatibility between QuickBooks and the operating system or other components.
  • Network connectivity issues between the hosting and client computers.
  • Outdated QuickBooks software.
  • Issues with the QuickBooks installation, such as missing or damaged components.
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Solutions to Resolve Quickbooks H505 Error Code

1. Verify Network Setup:

  • Go to the hosting computer and verify the network setup.
  • Ensure that the server computer name is correct, and the hosting computer is in multi-user mode.
  • Also, verify that the hosting computer and client computers are connected to the same network.

2. Disable Firewall:

  • Temporarily disable the firewall on the hosting computer to see if it resolves the issue.
  • If the error is resolved, configure the firewall to allow access for QuickBooks.

3.  Check Login Credentials:

  • Ensure the login credentials are entered correctly on the client computer.
  • If the credentials are correct, try to access the company file from another computer to verify that the issue is not with the client computer.

4. Open Required Network Ports:

  • Verify that all required ports are open.
  • The required ports for QuickBooks include: 8019, 56726, and 55378-55382.
  • Ensure that the router is configured to allow incoming and outgoing traffic for these ports.

5. Run QuickBooks File Doctor:

  • Use the QuickBooks File Doctor to diagnose and repair the company file.
  • This tool can detect and repair network connectivity issues and other file-related problems.

6. Update QuickBooks Software:

  • Update QuickBooks to the latest version.
  • Updating the software can resolve compatibility issues with the operating system or other components.

7. Rename .ND file:

  • Rename the .ND file on the hosting computer and see if it resolves the issue.
  • The .ND file is responsible for maintaining network connectivity.
  • Renaming the file can help if it has become corrupted or damaged.
  • Verify Hosting Configuration:
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8. Ensure the hosting configuration is set up correctly.

  • The hosting configuration determines how QuickBooks accesses the company file over the network.
  • Verify that the hosting configuration is set to “Host multi-user access” on the hosting computer.

9. Network Setup in Multi-User Mode.

  • Verify that the network setup is correct when using QuickBooks in multi-user mode.
  • Ensure that the hosting computer and client computers are connected to the same network and can communicate with each other.

10. Verify QuickBooks Database Server Manager:

  • Use the QuickBooks Database Server Manager to verify the hosting configuration and ensure the company file is being shared correctly.
  • The tool can detect and resolve network connectivity issues and other problems that may be causing the error.


The H505 Error Code is a common issue that occurs when accessing a QuickBooks company file over a network. There are several solutions that can resolve the issue, ranging from verifying network setup and login credentials to using tools like QuickBooks File Doctor and QuickBooks Database Server Manager. If all else fails, a repair or reinstall of QuickBooks may be necessary. By following the steps outlined above, you can resolve the H505 Error Code and regain access to your QuickBooks company file.

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Michelle Gram Smith
Michelle Gram Smith is a owner of www.parentsmaster.com and loves to create informational content masterpieces to spread awareness among the people related to different topics.







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