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What is QuickBooks Error 3371? General Causes and Troubleshooting Solutions

QuickBooks is a widely-used accounting software designed to simplify financial management for businesses. Despite its efficiency, users may occasionally encounter errors that disrupt their workflow. One such common issue is QuickBooks Error 3371. In this comprehensive guide, we will explore what QuickBooks Error 3371 is, its general causes, and effective troubleshooting solutions to fix it.

QuickBooks Error 3371

What is QuickBooks Error 3371?

QuickBooks Error 3371 occurs when the software fails to load the license data. This error typically displays the following message:

 Error 3371: Could not initialize license properties.

This error can prevent users from accessing their QuickBooks company file, causing significant inconvenience and potentially affecting business operations. Understanding the underlying causes is essential to resolving this error efficiently.

General Causes of QuickBooks Error 3371

Several factors can trigger QuickBooks Error 3371. Let’s delve into the most common causes:

1. Damaged or Missing QBregistration.dat File

The QBregistration.dat file contains crucial license information for QuickBooks. If this file is damaged or missing, QuickBooks cannot verify the license, leading to Error 3371.

2. Corrupted MSXML Component

Microsoft MSXML is a core component required by QuickBooks to function correctly. If this component is damaged or corrupted, it can hinder QuickBooks from accessing the necessary information to initialize.

3. Outdated Windows Operating System

Using an outdated version of the Windows operating system can lead to compatibility issues with QuickBooks, potentially triggering Error 3371.

4. Anti-Virus and Security Software

Sometimes, anti-virus or security software can mistakenly block QuickBooks components, causing the software to malfunction and display Error 3371.

5. Network Issues

Network-related problems, such as unstable internet connections or firewall restrictions, can prevent QuickBooks from verifying license information, resulting in Error 3371.

Troubleshooting Solutions to Fix QuickBooks Error 3371

Fixing QuickBooks Error 3371 involves several steps, ranging from simple solutions to more advanced troubleshooting techniques. Follow these steps carefully to resolve the issue and get your QuickBooks software running smoothly again.

1. Update Windows Operating System

Ensuring your Windows operating system is up to date can resolve compatibility issues with QuickBooks. Follow these steps:

  1. Press Windows + I to open the Settings menu.
  2. Click Update & Security.
  3. Select Windows Update and click Check for updates.
  4. Install any available updates and restart your computer.

2. Run QuickBooks Install Diagnostic Tool

The QuickBooks Install Diagnostic Tool can fix issues related to damaged Microsoft components. Here’s how to use it:

  1. Download the QuickBooks Tool Hub from the official Intuit website.
  2. Install and open the Tool Hub.
  3. Click Installation Issues.
  4. Select QuickBooks Install Diagnostic Tool and run the tool.
  5. Follow the on-screen instructions and restart your computer after the process completes.

3. Delete the ECML File

Deleting the ECML file can reset the QuickBooks licensing and potentially resolve Error 3371. Follow these steps:

  1. Press Windows + R to open the Run dialog box.
  2. Type C:\ProgramData\Intuit\Entitlement Client\v8 and press Enter.
  3. Locate the EntitlementDataStore.ecml file and delete it.
  4. Restart QuickBooks and re-register the product.

4. Reinstall MSXML Component

Reinstalling the MSXML component can fix corruption issues. Here’s how to do it:

  1. Press Windows + R to open the Run dialog box.
  2. Type appwiz.cpl and press Enter.
  3. Find and uninstall any existing MSXML components.
  4. Download and install the latest version of MSXML from the Microsoft website.

5. Configure Your Security Software

Ensure that your anti-virus or firewall settings are not blocking QuickBooks. Here are some general steps:

  1. Open your security software and locate the settings.
  2. Add QuickBooks and its components to the exclusion list.
  3. Ensure that the following QuickBooks files are not blocked:
    • QBW32.exe
    • QBDBMgrN.exe
    • QBDBMgr.exe
    • IntuitSyncManager.exe
  4. Restart QuickBooks and check if the error persists.

6. Perform a Clean Install of QuickBooks

If the above steps do not resolve the issue, a clean install of QuickBooks may be necessary. Follow these instructions:

  1. Uninstall QuickBooks:

    • Press Windows + R to open the Run dialog box.
    • Type appwiz.cpl and press Enter.
    • Find and uninstall QuickBooks from the list of programs.
  2. Rename Installation Folders:

    • Navigate to the installation directories:
      • C:\ProgramData\Intuit\QuickBooks
      • C:\Users\[Your User Name]\AppData\Local\Intuit\QuickBooks
    • Rename these folders by adding .old to the end of the folder names.
  3. Reinstall QuickBooks:

    • Download the latest version of QuickBooks from the official Intuit website.
    • Install QuickBooks and follow the on-screen instructions.
    • Re-register QuickBooks using your product and license information.

7. Seek Professional Assistance

If you are still experiencing issues after attempting the above solutions, it may be time to seek professional assistance. Contact QuickBooks customer support or consult with a certified QuickBooks ProAdvisor for expert help.

Preventing QuickBooks Error 3371 in the Future

Preventing future occurrences of QuickBooks Error 3371 involves maintaining your system and software properly. Here are some tips to keep in mind:

  • Regularly Update QuickBooks and Windows: Ensure both your QuickBooks software and Windows operating system are always up to date.
  • Backup Your Data: Regularly backup your QuickBooks data to prevent data loss in case of errors.
  • Use Reliable Security Software: Ensure your anti-virus and firewall settings are configured to allow QuickBooks to operate without interruptions.
  • Perform Regular System Maintenance: Regularly clean your system to remove unnecessary files and fix any registry issues that may arise.


QuickBooks Error 3371 can be a frustrating issue, but with the right knowledge and troubleshooting steps, it can be resolved efficiently. By understanding the general causes and following the detailed solutions provided in this guide, you can minimize downtime and ensure your QuickBooks software runs smoothly.

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