How to Fix QuickBooks Error H101?

Written by James Smith  »  Updated on: July 08th, 2024

How to Fix QuickBooks Error H101?

Understanding and Resolving QuickBooks Error H101

QuickBooks is an essential tool for many businesses, streamlining accounting and financial management processes. However, like any software, it can encounter errors that disrupt workflow. One common issue is QuickBooks Error H101. This error typically arises when switching QuickBooks to multi-user mode and indicates that the computer trying to access the company file needs additional configuration. Let's delve into the causes, symptoms, and solutions for QuickBooks Error H101.

What is QuickBooks Error H101?

QuickBooks Error H101 is part of the H series errors, which usually occur when there are issues with the multi-user hosting setup. This error signifies that the server computer (the one hosting the company file) needs additional configuration to allow other workstations to access the file.

Causes of QuickBooks Error H101

Several factors can contribute to the occurrence of Error H101:

Incorrect Hosting Configuration: The server computer may not be correctly configured to allow multi-user access.

Firewall Settings: A firewall or security software might be blocking communication between the server and workstations.

Network Issues: Problems with the network connection can prevent access to the company file.

Damaged or Corrupt .ND File: The Network Data (.ND) file, which is essential for multi-user mode, might be damaged or corrupted.

QuickBooks Services Not Running: QuickBooks Database Server Manager and other QuickBooks services might not be running on the server computer.

Symptoms of QuickBooks Error H101

Identifying Error H101 can be straightforward if you notice the following symptoms:

  • An error message with code H101 appears when attempting to switch to multi-user mode.
  • The system slows down or freezes when trying to access the company file.
  • Users are unable to open the company file stored on the server.
  • QuickBooks crashes or stops responding frequently.

How to Fix QuickBooks Error H101?

Resolving QuickBooks Error H101 involves several troubleshooting steps. Here are the most effective solutions:

Verify Hosting Settings

  • On each workstation, open QuickBooks.
  • Go to File > Utilities.
  • If you see the option "Host Multi-User Access," it means this workstation is not hosting the company file. If you see "Stop Hosting Multi-User Access," select it to ensure only the server computer hosts the file.

Use QuickBooks Database Server Manager

  • Download and install QuickBooks Database Server Manager on the server computer.
  • Open the tool from the Start menu.
  • Use it to scan the folder where the company file is stored. This will ensure the .ND file is configured correctly.

Configure Firewall Settings

  • Open the Control Panel and go to System and Security > Windows Firewall.
  • Select Advanced Settings and create inbound and outbound rules for QuickBooks.
  • Ensure ports 8019, 56728, 55378-55382 are open for QuickBooks.

Check QuickBooks Services

  • Press Windows + R, type services.msc, and press Enter.
  • In the Services window, find QuickBooksDBXX (where XX represents your QuickBooks version) and QBCFMonitorService.
  • Ensure both services are set to Automatic and are running. If not, right-click each service and select Start.

Create a New Folder for the Company File

  • On the server computer, create a new folder.
  • Copy the company file (.QBW) and paste it into the new folder.
  • Ensure the folder has proper permissions for access by all users.


QuickBooks Error H101 can disrupt your business operations, but with the right troubleshooting steps, it can be resolved quickly. By ensuring proper hosting configuration, adjusting firewall settings, and using QuickBooks Database Server Manager, you can maintain seamless access to your company file in multi-user mode. If the error persists, contacting QuickBooks Support for professional assistance might be necessary.

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