Troubleshooting QuickBooks Error H505: A Comprehensive Guide

Troubleshooting QuickBooks Error H505: A Comprehensive Guide

July 25, 2023


QuickBooks is a renowned accounting software used by countless businesses worldwide for its efficient and user-friendly features. However, like any software, it is not immune to errors, and one of the most commonly encountered issues is QuickBooks Error H505. This error occurs when a user attempts to access a company file located on another computer but fails to establish a connection with the QuickBooks server. Fortunately, this error can be resolved with the appropriate troubleshooting steps, which we will delve into in this comprehensive guide.

Understanding QuickBooks Error H505

QuickBooks Error H505 is part of the H-series errors that signify issues related to hosting and multi-user mode. This specific error code appears when QuickBooks Desktop is unable to access the company file hosted on a remote computer. There can be several reasons for this error, some of which include:

  1. Incorrect settings of hosting configuration: QuickBooks must be set up correctly on all computers in multi-user mode. If the hosting configuration is incorrect, it can lead to the H505 error.
  2. Firewall or security settings: In some cases, the firewall or security software on the computer may be blocking the necessary ports and preventing QuickBooks from establishing a connection with the server.
  3. IP address or server name issues: If the server’s IP address or name is not configured properly, it can lead to errors when attempting to access the company file.
  4. Damaged .ND file: The Network Data (.ND) file in QuickBooks contains network-related information, and if it gets corrupted, it can lead to error H505.
  5. DNS settings: Problems with Domain Name System (DNS) settings can also prevent QuickBooks from accessing the server.
  6. Hosting conflicts: If there are conflicts between different computers trying to host the company file, it can trigger the H505 error.

Now that we understand some common causes of QuickBooks Error H505, let’s move on to the troubleshooting steps to resolve the issue.

See these also: QuickBooks error 6190 | QuickBooks error 557

Troubleshooting QuickBooks Error H505

  1. Verify hosting settings on all computers:
    • Open QuickBooks on each computer connected to the network.
    • Go to “File” and then select “Utilities.”
    • Ensure that the option “Host Multi-User Access” is not selected on workstations and is only enabled on the server.
  2. Check Firewall and Security Settings:
    • Configure the firewall settings to allow access to QuickBooks on all computers.
    • Add QuickBooks executable files (QBDBMgrN.exe, QBW32.exe, QBUpdate.exe) to the list of exceptions in the firewall.
  3. Verify Hosting Mode on the Server:
    • Open QuickBooks on the server computer.
    • Go to “File” and select “Utilities.”
    • Ensure that “Host Multi-User Access” is enabled on the server.
  4. Verify the correct folder location of the company file:
    • Make sure the company file is saved in the shared folder and all users have the appropriate permissions to access it.
  5. Test network connectivity:
    • Use the “Ping” command to test the connection between the server and workstations.
    • If there are issues, check network cables, switches, and routers for potential problems.
  6. Recreate the .ND file:
    • Locate the .ND file related to the company file causing the error.
    • Rename the .ND file to .OLD to create a backup.
    • Open QuickBooks again, and it will automatically recreate the .ND file.
  7. Reset DNS Settings:
    • Press “Windows + R” to open the Run dialog box.
    • Type “cmd” and press Enter to open the Command Prompt.
    • Type “ipconfig/flushdns” and hit Enter to reset the DNS settings.
  8. Use QuickBooks File Doctor:
    • Download and install the QuickBooks File Doctor tool from the official Intuit website.
    • Run the tool to identify and resolve network-related issues automatically.


QuickBooks Error H505 can be a frustrating issue, disrupting your workflow and preventing access to company files. However, with the troubleshooting steps provided in this guide, you can efficiently resolve the error and get back to managing your finances seamlessly.

If you encounter any challenges during the troubleshooting process or require expert assistance, feel free to reach out to QuickBooks Data Services Experts at +1 877-548-7404. They are well-versed in resolving various QuickBooks errors and can provide personalized solutions to cater to your specific needs.

Remember that proper configuration of network settings, hosting mode, and firewall permissions are crucial for a smooth multi-user experience in QuickBooks. By following the steps outlined in this guide and seeking expert help if necessary, you can overcome QuickBooks Error H505 and continue utilizing the software to its full potential for your business’s financial management.

More guides you can read: QuickBooks unrecoverable error windows 11 | QuickBooks restore failed

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