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How to Fix QuickBooks Error 6143: A Comprehensive Guide

QuickBooks is a robust accounting software widely used by small and medium-sized businesses to manage their financial tasks. However, like any other software, it is not immune to errors. One such error is QuickBooks Error 6143, which can disrupt your workflow and cause significant inconvenience. In this article, we will explore what QuickBooks Error 6143 is, the general causes behind it, and provide a step-by-step troubleshooting guide to fix it. Let’s dive in!

How to Fix QuickBooks Error 6143 A Comprehensive Guide

What is QuickBooks Error 6143?

QuickBooks Error 6143 is an error code that typically occurs when users attempt to open a company file. This error indicates that QuickBooks is unable to access the company file, which can be due to various reasons ranging from corrupted files to improper system settings.

Error Message

When you encounter QuickBooks Error 6143, you may see an error message like this:

“An error occurred when QuickBooks tried to access the company file. Please try again. If the problem persists, contact QuickBooks support and provide them with the error codes: (-6143, 0).”

General Causes of QuickBooks Error 6143

Understanding the root causes of QuickBooks Error 6143 is crucial for effective troubleshooting. Here are some common causes:

  • Corrupted Company File: The company file you are trying to access might be damaged or corrupted.
  • Incomplete Installation: An incomplete or faulty installation of QuickBooks can lead to this error.
  • System Issues: Problems with your operating system, such as registry errors or missing system files, can trigger the error.
  • Malware or Virus Attack: Malware or virus infections can corrupt files and disrupt QuickBooks operations.
  • Incorrect File Extension: The company file may have an incorrect extension or be improperly named.
  • Network Issues: Problems with your network connection or settings can prevent QuickBooks from accessing the company file.

Troubleshooting Solutions to Fix QuickBooks Error 6143

QuickBooks File Doctor is a handy tool provided by Intuit that fixes company file and network issues. Here’s how to use it:

  1. Download and Install QuickBooks Tool Hub:
    • Go to the official Intuit website.
  2. Run QuickBooks Tool Hub:
    • Open QuickBooks Tool Hub.
    • Select the Company File Issues tab.
    • Click on Run QuickBooks File Doctor.
  3. Scan Your Company File:
    • In QuickBooks File Doctor, select your company file from the drop-down menu.
    • If you don’t see your file, browse and locate it.
    • Select Check your file and click Continue.
    • Enter your QuickBooks admin password and click Next.

QuickBooks File Doctor will now scan and repair your company file. Once the process is complete, try opening the file again.

Solution 2: Restore a Backup of Your Company File

If your company file is corrupted, restoring a backup can resolve the issue. Follow these steps:

  1. Open QuickBooks:
    • Go to the File menu.
    • Select Open or Restore Company.
  2. Restore from Backup:
    • Choose Restore a backup copy and click Next.
    • Select Local Backup and click Next.
  3. Select Backup File:
    • Browse and locate your backup file.
    • Click Open and then Next.
  4. Choose Save Location:
    • Select the location where you want to save the restored file.
    • Click Save.

After restoring the backup, check if the error persists.

Solution 3: Rename the.ND and . TLG Files

The.ND and . TLG files are configuration files that QuickBooks uses to access your company file in a network or multi-user environment. Renaming these files can help resolve the issue. Here’s how:

  1. Close QuickBooks.
  2. Navigate to the Company File Folder:
    • Go to the folder where your company file is stored.
  3. Rename.ND and . TLG Files:
    • Locate the files with the same name as your company file but with extensions.ND and . TLG.
    • Right-click each file and select Rename.
    • Add .old at the end of each file name (e.g., CompanyFileName.nd.old and CompanyFileName.tlg.old).
  4. Open QuickBooks and Your Company File.

QuickBooks will recreate these files automatically when you open your company file.

Solution 4: Use QuickBooks Auto Data Recovery

QuickBooks Auto Data Recovery (ADR) can help recover lost or corrupted data. Here’s how to use it:

  1. Create a New Folder:
    • Please create a new folder on your desktop and name it QBTest.
  2. Copy.TLG and .QBW.adr Files:
    • Go to the folder where your company file is stored.
    • Look for the ADR folder.
    • Copy the.TLG and .QBW.adr files are in the QBTest folder.
  3. Rename the Files:
    • Remove .adr from both file names.
  4. Open QuickBooks:
    • Open QuickBooks and the company file located in the QBTest folder.

If your company file opens without error, you have successfully recovered your data.

Solution 5: Check and Repair Your Hard Drive

Sometimes, issues with your hard drive can cause QuickBooks Error 6143. Perform a disk check and repair any errors:

  1. Open Command Prompt as Administrator:
    • Press Windows + R to open the Run dialogue.
    • Type cmd and press Enter.
    • Right-click Command Prompt and select Run as administrator.
  2. Run CHKDSK Command:
    • In the Command Prompt, type chkdsk /f /r and press Enter.
    • Follow the on-screen instructions to schedule a disk check and restart your computer.

After the disk check is complete, try opening QuickBooks again.

Solution 6: Update QuickBooks to the Latest Version

Ensure that you are using the latest version of QuickBooks, as updates often include fixes for known issues:

  1. Open QuickBooks.
  2. Go to the Help Menu:
    • Select Update QuickBooks Desktop.
  3. Check for Updates:
    • Click on Update Now.
    • Select Get Updates.
  4. Install Updates:
    • Restart QuickBooks and follow the prompts to install the updates.

After updating QuickBooks, check if the error is resolved.

Solution 7: Reinstall QuickBooks Using the Clean Install Tool

If none of the above solutions works, you might need to reinstall QuickBooks using the Clean Install Tool:

  1. Uninstall QuickBooks:
    • Open Control Panel.
    • Go to Programs and Features.
    • Select QuickBooks and click Uninstall.
  2. Download QuickBooks Clean Install Tool:
    • Visit the official Intuit website.
  3. Run the Clean Install Tool:
    • Follow the on-screen instructions to reinstall QuickBooks.

After reinstalling, try opening your company file.


QuickBooks Error 6143 can be frustrating, but with the right approach, it can be resolved. By following the troubleshooting steps outlined in this guide, you can identify and fix the underlying issues causing the error. Remember to regularly back up your company files and keep your software updated to minimize the risk of mistakes in the future.

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