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How to Fix QuickBooks Error 6143

QuickBooks Error 6143 is a common yet frustrating issue that many QuickBooks users encounter. This error can disrupt your workflow, causing significant delays and stress. In this comprehensive guide, we’ll delve into the specifics of QuickBooks Error 6143, explore its general causes, and provide step-by-step troubleshooting solutions to help you resolve it quickly and efficiently.

How to Fix QuickBooks Error 6143

What is QuickBooks Error 6143?

QuickBooks Error 6143 typically occurs when there is a problem with the company file or how it is accessed. This error can prevent you from opening or working on your company file, leading to potential disruptions in your accounting processes.  

General Causes of QuickBooks Error 6143

Understanding the root causes of QuickBooks Error 6143 is crucial for effective troubleshooting. Here are some common reasons why this error might occur:

  1. Corrupted Company File: The company file you’re trying to access might be corrupted or damaged.
  2. Incorrect File Name: QuickBooks has specific naming conventions for files. An incorrect file name or file path can trigger this error.
  3. Insufficient User Permissions: Lack of proper permissions to access the file can lead to Error 6143.
  4. Damaged Windows Registry: Issues with the Windows registry associated with QuickBooks can cause this error.
  5. Conflict with Security Software: Sometimes, security software can interfere with QuickBooks, leading to various errors, including 6143.
  6. Improper Installation: If QuickBooks was not installed correctly, it might not function as expected, leading to this error.

Troubleshooting Solutions to Fix QuickBooks Error 6143

Now that we’ve identified the possible causes, let’s move on to the troubleshooting steps. Follow these solutions carefully to resolve QuickBooks Error 6143:

Solution 1: Rename the.ND and . TLG Files

The.ND and . TLG files are configuration files that allow QuickBooks to access a company file in a network or multi-user environment. Renaming these files can help resolve the issue.

  1. Navigate to the Company File Directory: Locate the folder where your company file is stored.
  2. Find the.ND and . TLG Files: Look for files with the same name as your company file but with.ND and . TLG extensions (e.g., company_file.qbw.nd and company_file.qbw.tlg).
  3. Rename the Files: Right-click each file and select “Rename.” Add.OLD at the end of each file name (e.g., company_file.qbw.nd.OLD and company_file.qbw.tlg.OLD).
  4. Open QuickBooks: Try opening your company file in QuickBooks again.

Solution 2: Use QuickBooks File Doctor

QuickBooks File Doctor is a built-in tool for fixing common errors, including Error 6143.

  1. Download and Install QuickBooks Tool Hub: If you haven’t already, download and install the latest version of QuickBooks Tool Hub.
  2. Open QuickBooks Tool Hub: Launch the tool and select the “Company File Issues” tab.
  3. Run QuickBooks File Doctor: Click “Run QuickBooks File Doctor” and follow the instructions to scan and repair your company file.
  4. Retry Accessing the Company File: Open your company file in QuickBooks after the scan.

Solution 3: Verify and Rebuild Data

Verifying and rebuilding data in QuickBooks can help fix issues related to data integrity.

  1. Open QuickBooks: Launch QuickBooks and open your company file.
  2. Go to the File Menu: Click “File” and select “Utilities.”
  3. Select Verify Data: Click “Verify Data” and let QuickBooks scan your company file for issues.
  4. Rebuild Data: If problems are found, return to “Utilities” and select “Rebuild Data.” Follow the prompts to rebuild your company file.

Solution 4: Check for Windows User Permissions

Ensure that you have the necessary permissions to access the company file.

  1. Right-click on the Company File Folder: Locate the folder where your company file is stored, right-click on it, and select “Properties.”
  2. Go to the Security Tab: Click on the “Security” tab and check the permissions for your user account.
  3. Modify Permissions: If your account doesn’t have full control, click on “Edit” and grant full control to your user account.
  4. Retry Opening the Company File: Try reopening your company file in QuickBooks.

Solution 5: Perform a Clean Install of QuickBooks

If the above solutions don’t work, a clean install of QuickBooks might be necessary.

  1. Uninstall QuickBooks: Go to the Control Panel and uninstall QuickBooks from your computer.
  2. Rename Installation Folders: After uninstalling, rename the QuickBooks installation folders to ensure no old files interfere with the new installation. Common folders include:
    • C:\Program Files\Intuit\QuickBooks
    • C:\Program Files (x86)\Intuit\QuickBooks
  3. Reinstall QuickBooks: Download the latest version of QuickBooks from the official website and install it on your computer.
  4. Restore Your Company File: Open QuickBooks and restore your company file after installation.

Solution 6: Check for Windows Registry Issues

Registry issues can also cause QuickBooks errors. Use a registry cleaner tool to fix any registry issues.

  1. Download a Registry Cleaner Tool: Several reputable registry cleaner tools are available online. Download and install one.
  2. Scan and Fix Registry Issues: Run the registry cleaner tool and let it scan your computer for issues. Fix any problems that are found.
  3. Restart Your Computer: After fixing the registry issues, restart your computer and try opening QuickBooks again.

Solution 7: Disable Security Software Temporarily

Security software can sometimes interfere with QuickBooks operations. Temporarily disabling it can help identify if it’s causing the issue.

  1. Open Security Software: Open your security software (antivirus or firewall).
  2. Disable Temporarily: Temporarily disable the software. Refer to the software’s documentation for instructions.
  3. Try Opening QuickBooks: Open QuickBooks and try accessing your company file.
  4. Re-enable Security Software: Remember to re-enable your security software after troubleshooting.


QuickBooks Error 6143 can be a significant hindrance, but it can be resolved effectively with the right approach. By following the troubleshooting steps outlined in this guide, you can identify the cause of the error and apply the appropriate solution. Always ensure you have a company file backup before attempting any fixes to avoid data loss.

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