Steve Smith
Steve Smith
Read 5 minutes

QuickBooks Error 6000 77: Common Causes and How to Resolve Them

QuickBooks is a versatile and essential tool for many businesses, providing a seamless platform for managing finances, payroll, and other critical accounting tasks. However, like any software, it can sometimes encounter issues that hinder its functionality. One such problem is QuickBooks Error Code 6000 77. This error typically occurs when trying to open a company file, and it can be caused by several factors. In this comprehensive guide, we'll explore the reasons behind Error Code 6000 77 and provide detailed troubleshooting tips to help you resolve it effectively.

Understanding QuickBooks Error Code 6000 77

QuickBooks Error Code 6000 77 generally appears with a message indicating that QuickBooks is unable to open the company file. This error can be particularly frustrating as it directly impacts your ability to access vital financial data. The primary causes of Error Code 6000 77 include:

  • Incorrect file path for the company file.
  • Insufficient permissions to access the file.
  • Corrupted or damaged company file.
  • Network connection issues.
  • Use of mapped drive rather than a UNC path.
  • Antivirus or firewall settings blocking access.

Identifying the root cause is crucial for implementing the correct solution. Let's dive into the step-by-step troubleshooting tips to resolve this error.

Step-by-Step Troubleshooting Tips

Step 1: Verify File Path and Rename .ND and .TLG Files

Incorrect file paths and corrupted configuration files (.ND and .TLG) can cause Error Code 6000 77. Renaming these files can help resolve the issue:

  1. Open the folder where your company file is stored.
  2. Locate files with the same name as your company file but with .ND and .TLG extensions (e.g., CompanyFile.qbw.ND and CompanyFile.qbw.TLG).
  3. Right-click on each file and select Rename.
  4. Add the word .old at the end of each file name (e.g., CompanyFile.qbw.ND.old).
  5. Open QuickBooks and try to access your company file again.

This process forces QuickBooks to create new .ND and .TLG files, which can resolve issues related to corrupted or misconfigured files.

Step 2: Use the QuickBooks File Doctor

QuickBooks File Doctor is a specialized tool designed to fix various QuickBooks errors, including Error Code 6000 77:

  1. Download and install the QuickBooks Tool Hub from the official Intuit website.
  2. Open the QuickBooks Tool Hub.
  3. Select Company File Issues from the menu.
  4. Click on Run QuickBooks File Doctor.
  5. In QuickBooks File Doctor, select your company file from the drop-down menu. If you don't see your file, browse to locate it.
  6. Choose Check your file and then Continue.
  7. Enter your QuickBooks admin password and click Next.

Allow the File Doctor to scan and repair your company file. This process may take some time, depending on the size of the file and the extent of the issues.

Step 3: Check Folder Permissions

Insufficient permissions can prevent QuickBooks from accessing the company file. Ensure that the folder containing your company file has the necessary permissions:

  1. Navigate to the folder where your company file is stored.
  2. Right-click on the folder and select Properties.
  3. Go to the Security tab.
  4. Ensure that all users have Full Control permissions. If not, click Edit and grant Full Control to all users.

After adjusting the permissions, try opening your QuickBooks company file again.

Step 4: Move the Company File to a Local Drive

Network issues can sometimes cause Error Code 6000 77. Moving the company file to a local drive can help determine if the network is the problem:

  1. Close QuickBooks.
  2. Navigate to the folder where your company file is currently stored.
  3. Copy the company file (with the .qbw extension) and paste it onto your local drive (e.g., Desktop or C: drive).
  4. Open QuickBooks and go to File > Open or Restore Company.
  5. Select Open a company file and navigate to the new location of the company file.

If the file opens successfully, the issue may be related to your network configuration or permissions.

Step 5: Use the UNC Path Instead of Mapped Drive

Using a mapped drive to access the company file can sometimes cause issues. Switching to a UNC path can resolve this:

  1. Open QuickBooks.
  2. Go to File > Open or Restore Company.
  3. Select Open a company file and click Next.
  4. In the Open a Company window, click the Network tab.
  5. Navigate to the folder where your company file is located using the UNC path (e.g., \ServerName\SharedFolder\CompanyFile.qbw).
  6. Select the company file and click Open.

Using the UNC path can help bypass issues related to mapped drives.

Step 6: Temporarily Disable Antivirus and Firewall

Antivirus or firewall settings can sometimes block QuickBooks from accessing the company file. Temporarily disabling these security features can help identify if they are causing the issue:

  1. Disable your antivirus software by right-clicking on the antivirus icon in the system tray and selecting Disable or Turn off.
  2. Turn off your firewall through the Control Panel:
  • Open Control Panel.
  • Go to System and Security.
  • Select Windows Defender Firewall.
  • Click on Turn Windows Defender Firewall on or off.
  • Turn off the firewall for both private and public networks.

After disabling these security features, try opening your QuickBooks company file again. If the error is resolved, consider adding exceptions in your antivirus and firewall settings for QuickBooks to prevent future interference.

Step 7: Update QuickBooks to the Latest Version

Outdated QuickBooks versions can encounter various errors. Ensure your QuickBooks software is up-to-date:

  1. Open QuickBooks.
  2. Navigate to Help in the menu bar.
  3. Select Update QuickBooks Desktop.
  4. Click on Update Now and then Get Updates.
  5. Restart QuickBooks after the update completes.

Updating your software can resolve compatibility issues and bugs that may be causing Error Code 6000 77.

Accounting & Bookkeeping Services For Your Business can also help manage and prevent such errors by maintaining your financial records accurately and efficiently.


QuickBooks Error Code 6000 77 can be a significant hurdle, but with a systematic approach, it can be effectively resolved. By following the comprehensive troubleshooting tips outlined in this guide, you can address the root causes of the error and restore access to your company file. Regularly updating your software, maintaining proper file and folder permissions, and ensuring network stability are essential practices to prevent future occurrences of this error. If the issue persists despite your best efforts, consider reaching out to QuickBooks support for further assistance. Their expertise can provide advanced troubleshooting and ensure your QuickBooks experience remains seamless and productive.

Read more - QuickBooks Error - QuickBooks Error Codes List And Its Easy Solution To Fix Guide

1 view