QuickBooks Error 6143: Complete Guide to Resolving It

QuickBooks is a reliable accounting software trusted by many businesses, but users occasionally encounter errors, such as QuickBooks Error 6143. This error often occurs when there is an issue with the company file. In this comprehensive guide, we will explore the steps needed to resolve QuickBooks Error 6143.

What Causes QuickBooks Error 6143?

Before diving into the solutions, it’s essential to understand the potential causes of QuickBooks Error 6143:

  • Corrupted Company Files: Corruption in the company file can lead to this error.
  • Incomplete Installation: An incomplete or improper installation of QuickBooks can cause issues.
  • System Errors: Problems with Windows system files might contribute to the error.
  • Malware or Virus: Infections can disrupt the proper functioning of QuickBooks.

Step-by-Step Guide to Fix QuickBooks Error 6143

Follow these steps to troubleshoot and resolve QuickBooks Error 6143:

Step 1: Use QuickBooks File Doctor

The QuickBooks File Doctor is a helpful tool designed to fix company file issues.

  1. Download and Install QuickBooks Tool Hub:
    • If you don’t have the Tool Hub, download it from the official QuickBooks website.
    • Follow the installation instructions.
  2. Run QuickBooks File Doctor:
    • Open QuickBooks Tool Hub and select the “Company File Issues” tab.
    • Click on “Run QuickBooks File Doctor.”
    • Choose your company file from the list and click “Check your file.”
    • Follow the prompts to allow the tool to scan and repair your file.
  3. Restore a Backup:
    • If the File Doctor doesn’t resolve the issue, try restoring a backup copy of your company file.
    • Go to the File menu, select “Open or Restore Company,” and choose “Restore a Backup Copy.”
    • Follow the steps to restore a backup from before the error occurred.

Step 2: Rename .ND and .TLG Files

The .ND and .TLG files are network data and transaction log files associated with your company file. Renaming them can resolve the error.

  1. Find the Files:
    • Navigate to the folder where your company file is stored.
    • Locate the files with the same name as your company file but with .ND and .TLG extensions (e.g., MyCompanyFile.qbw.nd and MyCompanyFile.qbw.tlg).
  2. Rename the Files:
    • Right-click each file and select “Rename.”
    • Add “.old” to the end of each file name (e.g., MyCompanyFile.qbw.nd.old and MyCompanyFile.qbw.tlg.old).
    • Try opening your company file in QuickBooks again.

Step 3: Open QuickBooks in Safe Mode

Starting your computer in Safe Mode can help determine if a background application is causing the error.

  1. Restart in Safe Mode:
    • Press Windows + R to open the Run dialog box.
    • Type msconfig and press Enter.
    • In the System Configuration window, select the “Boot” tab.
    • Check “Safe boot” and choose “Network.”
    • Click “OK” and restart your computer.
  2. Open QuickBooks in Safe Mode:
    • Once in Safe Mode, open QuickBooks and try accessing your company file.
    • If the error doesn’t occur, a background application might be causing the issue.

Step 4: Verify and Rebuild Data

QuickBooks has built-in utilities to verify and rebuild your company file’s data.

  1. Verify Data:
    • In QuickBooks, go to the File menu.
    • Select “Utilities” and then “Verify Data.”
    • Follow the prompts to verify your company file.
  2. Rebuild Data:
    • If data verification finds issues, go to the File menu.
    • Select “Utilities” and then “Rebuild Data.”
    • Follow the prompts to rebuild your company file.

Step 5: Reinstall QuickBooks

If all else fails, you may need to reinstall QuickBooks.

  1. Uninstall QuickBooks:
    • Press Windows + R to open the Run dialog box.
    • Type appwiz.cpl and press Enter to open Programs and Features.
    • Select QuickBooks from the list and click “Uninstall.”
    • Follow the instructions to remove QuickBooks.
  2. Reinstall QuickBooks:
    • Download the latest version of QuickBooks from the official website.
    • Run the installer and follow the installation instructions.

Books Correct Accounting Services stands at the forefront of financial management and they are relatable, always ready to assist you with practical advice and support to keep your accounting processes running seamlessly.



Resolving QuickBooks Error 6143 involves a series of troubleshooting steps, from using the QuickBooks File Doctor to verifying and rebuilding data, and potentially reinstalling QuickBooks. By following these steps, you can fix the error and restore access to your company file, ensuring your business operations continue smoothly. If the error persists, contacting QuickBooks support for professional assistance is recommended.

Read more – QuickBooks Error Codes And Their Solutions