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How to Troubleshoot QuickBooks Error Code 6129?

Are you hunting for a reliable solution to troubleshoot Error code 6129 in QuickBooks? If yes, this article encapsulates answers to all your questions pertaining to Error Code 6129.


QuickBooks error 6129 can occur at any time while working with your company file, thus preventing you from accessing it in single-user or multi-user mode. You can use a variety of troubleshooting techniques to resolve the issue. When you get QuickBooks error code 6129 the error message that appears on the screen says that QuickBooks can't validate the database connection. There are several ways of fixing the error code 6129. This article shall equip you with all viable troubleshooting measures to rectify Error Code 6129, besides sailing you across the various symptoms and causes leading to the error.


You may also read : How to Fix QuickBooks error PS036?

Symptoms of QuickBooks error 6129

Following symptoms may show up in the case of Error Code 6129 in QuickBooks.


• The Windows operating system will be slow to respond.

• Running the QuickBooks software will frequently cause the system to crash.

• The system will repeatedly freeze.

• The error message will appear, causing the current window to crash.

Causes behind QuickBooks Error Code 6129

• QuickBooks' functioning is obstructed by some antivirus or anti-malware software.

• There may be some damage caused to the '.ND' (Network Data) file.

• Upgraded the company file with a user account that does not have administrator rights.

• Accessing a company file that is on a separate network domain.


Troubleshooting methods to fix Error 6129 in QuickBooks

Go through this section with utmost observance to apprise yourself of the most reliable methods of troubleshooting Error Code 6129 in QuickBooks. Makes sure that you go through this section till its conclusion.


Method 1: Rename the Network Data file

By renaming a damaged network file, you ensure that QuickBooks is unable to access the same. As a resort, due to its indispensability, QuickBooks creates a new Network file, which of course, is error-free.

• Go to the QuickBooks installation folder in Windows File Manager.

• Right-click the '.ND' extension file.

• Choose 'Rename' and type a new name and add. 'OLD' at the end of the file name.

• Reopen the company file and check if the technical Error Code 6129 got resolved in QuickBooks.


Method 2: Move your Company File to a Different Location

• Open the QuickBooks installation folder and copy the company file.

• Make a 'New folder' on the desktop.

• Copy the Company File ('Ctrl + C') and paste it ('Ctrl + V') into the newly formed folder.

• Open QuickBooks Desktop and navigate to the new folder where the company file is located.

• If the error got resolved, it infers that the folder containing the company file has been damaged, and you must repair the folder.


Method 3: Use Safe Mode to login into Windows

• Restart your computer and keep pressing the 'F8' key on your keyboard until the system displays the boot screen.

• If the 'Advanced Boot Options' box does not appear, restart your computer and press and hold the F8 key again.

• Click the down-arrow key to bring up the 'Advanced Boot Options' box, then pick 'Safe Mode with Networking.'

• Press 'Enter.'

• Use the admin account to log in and try to open your company file.

Method 4: Update the QuickBooks Desktop software

This is the most common solution for QuickBooks issues. If your QuickBooks version isn't up to the latest one, you'll need to upgrade it. Following the instructions below to update QuickBooks Desktop:

• Open QuickBooks desktop software.

• Go to the 'Help' menu and select 'Update QuickBooks.'


• Choose the updates you want to download and click the 'Get Updates' button.


• Afterwards, choose 'Update' and wait for the procedure to complete.


Method 5: Run the QuickBooks File Doctor

• Download & install the QuickBooks Tool hub.

• Launch the tool and select the 'Company File Issue' section, and then choose 'Run QuickBooks File Doctor. '

• After the tool will run to diagnose the problem and will fix the problem if there have any issues.



Method 6: Disable Antivirus in the Safe Mode

• Restart our system, and on the appearance of the boot screen, press the 'F8' key repeatedly.

• Switch to 'Safe Mode' by choosing 'Safe Mode with Networking.'

• Restart the system.

• Turn off any antivirus software that is currently running.

• Now create a new Company File.

• Once done, restart the PC in Normal Mode.

• Launch QuickBooks Desktop and open the Company File. Verify if error 6129 got resolved.



Winding up!

This article contained the most effective methods for troubleshooting Error Code 6129 in QuickBooks. We are hopeful that the information contained in this article helped you fix this error and any technical problems associated with it. If you face up with any difficulty, feel free to contact our QuickBooks Customer Support team to acquire unparalleled assistance.

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