How to Resolve QuickBooks Error H101, H202, H303 and H505?

Are you encountering QuickBooks Error H101, H202, H303 or H505 while trying to access your company file? QuickBooks Error H101 is a common issue faced by users when setting up multi-user mode.

These errors can be frustrating, but fear not, as we’re here to provide you with a step-by-step solution to resolve them. In this article, we’ll delve into the causes of these QuickBooks errors and guide you on how to fix them efficiently.

Understanding the Causes of H101 QuickBooks Error

Understanding the Causes of H101 QuickBooks Error

H101 QuickBooks error typically occurs when the software is unable to access the company file on a network.

QuickBooks Error H101 occurs when you’re attempting to access a company file in multi-user mode, and there’s a need for additional installation and setup. Let’s explore the specific causes of each error – 

  • Unable to connect – QuickBooks fails to connect to the remote server to open the company file.
  • Incorrect hosting configuration – Incorrect QuickBooks file hosting configuration or settings.
  • Damaged .ND files – Damaged or incorrect .ND files configuration, which prevents QuickBooks from accessing company files on a network.
  • Database manager conflicts – Conflicts between QuickBooks Database Manager and DNS Server.
  • Ping issues – The QuickBooks workstation is unable to ping the Host computer, making the IP address unreachable.
  • DNS configuration – Inappropriate DNS configuration.

Causes of QuickBooks Error Code H505

Causes of QuickBooks Error Code H505

QuickBooks Error Code H505 occurs when you try to open a company file from a different computer, and QuickBooks cannot contact other computers connected to Multi-User hosting. Here are the main causes:

  • External File Location: The company file is not located on the computer you’re using.
  • Hosting Configuration Error: Incorrect hosting configuration in QuickBooks.
  • Corrupt Files: Corrupt or damaged QuickBooks files.
  • Firewall Blocking: QuickBooks Firewall settings may block access to company files or incoming/outgoing communication.

Causes of QuickBooks Error Code H303

QuickBooks Error Code H303 occurs when your company file is located on your computer but needs additional configuration to be accessed properly.

The causes include – 

  • Incorrect configuration – Incorrect hosting configuration settings.
  • Firewall issues – Firewall blocking communication.
  • Damaged .ND files – Incorrect or damaged .ND files.
  • Improper DNS settings – Inappropriate DNS settings in QuickBooks application.
  • Service failure – QuickBooks services not starting properly.
  • IP Address issues – Problems obtaining the IP address of a system.
  • Hosting configuration errors – All hosting configuration settings are incorrect.

Resolving QuickBooks Errors H101, H202, H303, and H505

QuickBooks Error H101, H202, H303, and H505 can be frustrating, but can be fixed by following specific troubleshooting steps.

Now that we understand the causes, let’s move on to resolving these errors. Follow the steps carefully to fix the issue and regain access to your QuickBooks company file – 

  • Check hosting settings – Ensure that hosting is correctly configured on the server computer.
  • Verify .ND files – Check and repair any damaged or incorrect .ND files.
  • Firewall configuration – Adjust your firewall settings to allow QuickBooks access.
  • Correct DNS settings – Ensure DNS settings in QuickBooks are accurate.
  • Service status – Confirm that QuickBooks services (QuickBooksDBXX/QBCF) are running correctly.
  • IP address resolution – Troubleshoot any IP address-related issues.

By following these steps, you can resolve QuickBooks Error H101, H202, H303, and H505 and get back to managing your finances seamlessly.

How to Resolve QuickBooks Multi-User Errors H101, H202, H303, and H505?

Are you encountering QuickBooks multi-user errors like H101, H202, H303, or H505? These issues can disrupt your workflow and hinder collaboration in a multi-user environment. In this guide, we’ll provide you with clear and concise solutions to tackle these errors effectively. Remember to perform these steps on the server computer where the QuickBooks company files are hosted.

Important Points to Remember – Ensure QuickBooks is Installed on the Server Computer: QuickBooks must be installed on the server where the company files are stored. If it’s not already installed, you can download it from the official Intuit website.

Now, let’s dive into the solutions for QuickBooks Error Code H202 – 

Solutions for QuickBooks Error Code H202

Follow these steps – 

  • Go to the server system where the QuickBooks company file is physically stored.
  • Click on the “Start” icon and type “database” in the search bar.
  • Select “QuickBooks Database Server Manager” (QBDSM).
  • If no folder locations are displayed, click on the “Browse” button and locate the folder where your QuickBooks company files are stored.
  • Click “OK.”
  • Click the “Start Scan” option. This will repair firewall permissions and enable QuickBooks to communicate over the network, resolving the QuickBooks error.
  • Once the scan is complete, click “Close” and try opening QuickBooks in Multi-User mode on one or more workstations.

Quick Solutions for QuickBooks Error Code H505

QuickBooks Error Code H505 can disrupt your multi-user environment, but worry not, we’ve got you covered with these straightforward solutions. Follow these steps to resolve the error and get your QuickBooks back on track.

Solution 1 – Disable hosting mode on workstations

Disable hosting mode on workstations

Navigate to each workstation (except the server) and follow these steps – 

  • Click on the “File” tab in the QuickBooks application.
  • Select “Utilities.”

Note – You can do this without opening any specific company file

  • Check the “Host Multi-User Access” dropdown list. If it says “Stop Hosting Multi-User Access,” select this option to disable hosting on the computer. This will resolve QuickBooks Error Code H505.
  • Ensure that all workstations appear as standalone computers under “File” => “Utilities.”

Important – Seek help from an IT professional if these steps seem complex. To tackle H101 QuickBooks error, users should verify that the QuickBooks Database Server Manager is properly installed.

Solution 2 – Verify hosting and services

Check the hosting – 

  • On each workstation (except the server), open QuickBooks and go to “File” => “Utilities.”
  • If you see the “Host Multi-User Access” drop-down list, this PC is not hosting the QB company file, and you can use it as a standalone PC.
  • If you find the “Stop Hosting Multi-User Access” option, select it.

Check the QuickBooks Services

  • Press “Windows + R” to open the Run box.
  • Type “services.msc” and press “Enter.”
  • Look for the ‘QuickBooksDBXX’ service (XX indicates the QuickBooks Desktop version).
  • If you can’t find it there, please ensure that QuickBooks Database Server Manager (QBDSM) is installed on the server.
  • If QBDSM is running on the server, open QuickBooks on the server, go to “File” => “Utilities,” and ensure hosting is enabled.
  • Double-click on ‘QuickBooksDBXX’ service. Set ‘Startup Type’ to ‘Automatic’ and ensure the service status is ‘Running’ or ‘Started.’
Check the QuickBooks Services
  • In the “Recovery” tab, select “Restart the Service.”
  • Click “OK” to save the changes.
  • Repeat the above steps for ‘QBCFMonitorService.’
  • To resolve the problem, first, make sure that QuickBooks is running in multi-user mode on all the impacted computers. 
  • If the issue still persists, double-check that the ‘QuickBooksDBXX’ service is included in the administrator group and has the necessary permissions.
  • Share QB company files using ‘Set Windows access permission’ and verify the files.

For Windows Server 2012 Essentials R2 Users – 

  • Stop the ‘Base Filtering Engine Service’ (BFE). Note that this may disconnect other PCs and remote sessions.
  • Restart the server to regain connections.
  • Open the ‘Base Filtering Engine Service.’
  • Restart ‘Base Filtering Engine Service’ and QuickBooks Database Server Manager.
  • Ensure Windows Firewall is running.

Solution 3 – Configure Firewall and Network Ports

Important Notes

  • Configure your firewall and internet security settings for QuickBooks. Manually set up port exceptions on the Windows Firewall.
  • If using third-party antivirus/firewall, configure it accordingly.
  • Temporarily disable antivirus/firewall during testing, but re-enable it afterward.

Confirming UNC (Universal Naming Convention) versus Mapped Drive (File Path Resolution) – A Method to Address File Path Issues.

Important – Perform these technical steps with the guidance of an experienced IT professional.

Confirming UNC (Universal Naming Convention) versus Mapped Drive (File Path Resolution) – A Method to Address File Path Issues.
  • Ensure Network Discovery is on.
  • Identify the server name using “ipconfig /all.”
  • Use “ping [servername]” to check connectivity.
  • If using mapped drives, try accessing the QB company file using UNC path (e.g., \server\QBData).
  • Use the UNC path to locate the file within QuickBooks.
  • If the path begins with a drive letter, it’s a mapped drive. Replace it with UNC path (Universal Naming Convention).
  • Utilize the UNC path to find the QB company file in QuickBooks.

Solution 4 – Add the server to the Windows hosts file

Find the IP Address and Computer Name – 

  • On the server, press “Windows + R” to open the Run window.
  • Type “cmd” and hit Enter to open a Command Prompt window.
  • Type “ipconfig /all” and note the Host Name and IP Address.
Add the server to the Windows hosts file
  • Repeat these steps on any additional computers connected to the server.

Edit the Windows Hosts File.

Solution 5 – Create a new folder for the company file

On the host computer, create a new folder, share it, set up the folder, and configure Windows access permissions.

Important Note –  If you lack access to the file server, consult your office’s IT expert or professional.

  • Copy the .qbw file to the new folder.
  • Open the company file while using the multi-user mode again.

By following these steps, you can effectively troubleshoot QuickBooks Error Code H505 and maintain a smooth multi-user environment.

You May Read Also: How to Resolve QuickBooks Error Code 80004005/80004003?


In conclusion, QuickBooks Error H101, H202, H303, and H505 can be a frustrating roadblock for businesses and individuals seeking seamless accounting and financial management. However, by understanding the root causes, symptoms, and troubleshooting steps outlined in this article, users can take proactive measures to address this issue effectively. Whether it’s a network-related problem, firewall configuration, or issues with hosting, the key is to diagnose and resolve the error promptly to ensure uninterrupted access to your financial data.

Remember that QuickBooks offers a robust support system, including online resources, community forums, and customer support, should you require further assistance. Don’t let QuickBooks Error H101, H202, H303, and H505 hinder your financial operations. Instead, use the knowledge and tools available to tackle it head-on and keep your QuickBooks experience running smoothly. With the right approach, you can overcome this error and continue to harness the power of QuickBooks for your financial needs.

Frequently Asked Questions

What is QuickBooks Error H101, and why does it occur?

QuickBooks Error H101 is a multi-user mode error that occurs when QuickBooks Desktop is unable to access a company file on a network. It usually happens due to incorrect network setup or issues with the host computer.

How can I fix QuickBooks Error H101 on my own?

To resolve H101 QuickBooks error, you can follow troubleshooting steps like checking network settings, configuring the Windows hosts file, and ensuring the QuickBooks Database Server Manager is correctly installed.

What are the common symptoms of H101 QuickBooks error?

Common symptoms of H101 error include an inability to switch to multi-user mode, difficulty opening company files, and error messages stating that QuickBooks cannot connect to the server.

Can network configuration issues lead to QuickBooks Error H101?

Yes, network configuration problems such as firewall settings and incorrect DNS settings can contribute to the occurrence of H101 QuickBooks error.

What role does the Windows hosts file play in resolving H101 QuickBooks errors?

The Windows hosts file is crucial in resolving H101 errors as it helps QuickBooks identify the server’s IP address. Correctly configuring this file can alleviate H101 issues.

Is there a QuickBooks support hotline for addressing H101 errors?

Yes, you can contact QuickBooks support via their hotline to get assistance with resolving H101 QuickBooks errors. They provide expert guidance to help you resolve the issue.

Are there preventive measures to avoid encountering QuickBooks Error H101?

Yes, you can prevent H101 errors by ensuring your network is properly configured, using the QuickBooks Database Server Manager, and regularly updating QuickBooks.

Can H101 QuickBooks errors lead to data loss?

H101 errors themselves do not cause data loss. However, if not resolved promptly, they can disrupt your access to financial data, potentially affecting your business operations.

What should I do if QuickBooks Error H101 persists after troubleshooting?

If H101 errors continue, you may need to consult a QuickBooks expert or IT professional to perform more advanced troubleshooting, ensuring a complete resolution.

How does QuickBooks Error H101 impact multi-user collaboration in my business?

H101 errors can hinder multi-user collaboration by preventing users from accessing the company file simultaneously. This can slow down work processes and affect productivity. Resolving H101 errors is essential for smooth collaboration in a multi-user environment.

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