Understanding and Resolving QuickBooks Error H505: A Comprehensive Guide

QuickBooks is a popular accounting software used by businesses worldwide to manage their finances efficiently. However, like any software, QuickBooks is prone to errors that can disrupt workflow and cause frustration for users. One such error is QuickBooks Error H505, which occurs when the software is unable to connect to the company file located on another computer. In this comprehensive guide, we’ll delve into the intricacies of QuickBooks Error H505, its causes, symptoms, and most importantly, how to resolve it effectively.

Understanding QuickBooks Error H505

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QuickBooks Error H505 is part of a series of H-series errors that occur when QuickBooks is unable to access the company file due to network-related issues. This particular error indicates that the computer on which QuickBooks is installed is unable to communicate with the server hosting the company file. As a result, users may encounter error messages such as “QuickBooks cannot open the company file” or “This company file is on another computer.”

Causes of QuickBooks Error H505

Several factors can contribute to the occurrence of QuickBooks Error H505. Some of the most common causes include:

  1. Incorrect hosting configuration settings in QuickBooks.
  2. Damaged or corrupted QuickBooks company files.
  3. Issues with the network setup windows 11, such as firewall or router settings blocking access.
  4. Improper setup of the QuickBooks Database Server Manager.
  5. Problems with DNS settings or network connectivity.

Symptoms of QuickBooks Error H505

QuickBooks Error H505 can manifest in various ways, including:

  1. Inability to open the company file from a remote computer.
  2. QuickBooks freezing or crashing when attempting to access the company file.
  3. Error messages indicating that the company file is inaccessible or located on another computer.
  4. Sluggish performance or unresponsiveness of QuickBooks.

Resolving QuickBooks Error H505

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Now that we understand the causes and symptoms of QuickBooks Error H505, let’s explore the step-by-step solutions to resolve it effectively:

  1. Verify Hosting Settings: The first step in resolving QuickBooks Error H505 is to ensure that hosting settings are configured correctly. Open QuickBooks on the computer hosting the company file and navigate to the “File” menu. Select “Utilities” and then choose “Stop Hosting Multi-User Access” if it is enabled. Next, go to the “File” menu again and select “Utilities” > “Host Multi-User Access” to enable hosting. Repeat this process on all computers connected to the network, ensuring that only one computer hosts the company file.
  2. Check Firewall and Security Software Settings: Firewall or security software settings on your computer may be blocking QuickBooks from accessing the company file. To resolve this, configure your firewall settings to allow inbound and outbound communication for QuickBooks. Additionally, add QuickBooks and its related executables to the list of trusted applications in your security software. Consult the documentation for your firewall or security software for instructions on how to modify these settings.
  3. Update QuickBooks and QuickBooks Database Server Manager: Ensure that both QuickBooks and QuickBooks Database Server Manager are updated to the latest versions. Outdated software may contain bugs or compatibility issues that contribute to QuickBooks Error H505. To update QuickBooks, open the software and navigate to the “Help” menu. Select “Update QuickBooks Desktop” and follow the on-screen instructions. Similarly, update QuickBooks Database Server Manager by downloading and installing the latest version from the Intuit website.
  4. Verify Network Connectivity: Check the network connectivity between the computer hosting the company file and the computers attempting to access it. Ensure that all computers are connected to the same network and that there are no network issues such as dropped connections or slow speeds. You can use network diagnostic tools or consult your network administrator to troubleshoot any network-related issues.
  5. Test Access to the Company File: Once you’ve completed the above steps, test access to the QuickBooks company file from each computer on the network. Open QuickBooks and attempt to open the company file by selecting “File” > “Open or Restore Company” > “Open a company file” and then navigating to the location of the company file. If you’re able to open the file without encountering QuickBooks Error H505, the issue has been resolved successfully.


QuickBooks Error H505 can be a frustrating obstacle for users attempting to access their company files over a network. However, by following the step-by-step solutions outlined in this guide, you can effectively troubleshoot and resolve the error, restoring seamless access to your QuickBooks data. Remember to verify hosting settings, check firewall and security software settings, update QuickBooks and QuickBooks Database Server Manager, verify network connectivity, and test access to the company file. With persistence and diligence, you can overcome QuickBooks Error H505 and continue to leverage the full power of QuickBooks for your business accounting needs.

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