QuickBooks Error Code 6129 0 is displayed when the verification of the database connection fails or QB tries to access company files. Due to the error, QuickBooks user is unable to open the company file. If there is a network problem in the network used by the software, then it is not able to find the computer or the server that holds the file.

You may see the following error message when creating or opening a QuickBooks Desktop company file.

Error code: -6129, 0: Database connection verification failure

QuickBooks error code 6129 - Screenshot
In this blog post, we will discuss about this QuickBooks error 6129, 0 and it’s possible causes with some quick fixation methods. You can also contact to our technical support team at 1-844-405-0907 in case you are looking for an immediate help for this error.

Also see: How to Troubleshoot QuickBooks Error 6000 83 Code?

What are the Cause of QuickBooks Error 6129, 0?
There are many reasons that may create QuickBooks error 6129, 0. Few are as:

All the computers used in multi-user configuration mode are not using the latest QuickBooks version.
Because of data files with corrupted network.
Due to mismatch between client and server domain.
A company file upgraded to a new version of QuickBooks Desktop using a non-Windows Administrator profile
Damaged network data file (.ND)
How to fix this QuickBooks Error 6129, 0?
Below you will get the quick troubleshooting steps to resolve the Error code 6129, 0. You can also checkout the infographic and understand the ways to fix this error easily:

Fixation of QuickBooks Error Code 6129, 0 - Infographic Image
Before executing the solutions listed below, we recommend trying out a couple of things first:

See Also: How to Fix QuickBooks Install Error Code 1722?

Condition 1: You are creating a new company file:
Choose the “Exit or leave” option, On the easy action Interview window.
You need to be triggered to “Save the file“, just choose “Yes” option.
Enter a different file name, then choose the “Save” option.
Important: If changing the file name doesn’t work, try transforming the file location.

Condition 2: If you are opening or updating your company file:
Firstly, Open a sample company file to recognize if the problem is file related or not. If the issue is happening to all your company files, go with below given solution methods.
Log in as a Windows System Administrator before adhering to the actions in this section.
To fix the QuickBooks Error 6129, 0, there are multiple troubleshooting steps that needs to be followed. Below, we will let you know about the steps in detail as follows. However before proceeding to the given steps, make sure that all the computers used have been updated to the latest version of QuickBooks release.

Also read: What is the ways to fix QuickBooks error 15215?

Solution 1: Login as as Windows Administrator
Run as Administrator - Screenshot
First try opening a company file. Log into Windows as an “System Administrator” to update the company file required.
In case you cannot login as an Administrator, then find support for Windows and or an IT professional for help.
See this also: How to Fix QuickBooks Error 6000? (When Opening a Company File)

Solution 2: Disable Antivirus and other Software in case you use Windows on Safe Mode
Restart the computer in the “Safe Mode”
Disable the active antivirus software.
Create a new Company File.
Again restart the computer in Normal Mode.
Open QuickBooks and the Company File.
You may also like: How to Clean Up before you upgrade to QuickBooks desktop 2019?

Solution 3: Rename QuickBooks Network Files (.ND)
Rename .ND and .TLG files- screenshot
Firstly open the folder where your company file is saved.
Look on your hard drive or the system for QuickBooks files that are named with the extension “.nd”.
Rename the file to an old company file name by right clicking on the file and choosing “Rename”.
Type “.OLD” as the file extension and press “Enter”.
In case one has to access the same company file on multiple computers, then make sure you follow these steps for all the files.
In case the Company File is used on one computer only, then you can open the file right away.
Click on the Windows Start Button > Programs > QuickBooks > QuickBooks Database Server Manager.
Select on the “Scan Folders” Tab.
In case there is no folder that contains the required Company File, then Add a “new Folder”.
Click on the “Scan” tab
Click the “Close Option” once Scan is completed.
Finally Open the “Company File”.
Read Also: How to Choose the Right Bookkeeping Services?

Solution 4: Copy the company file into a different location
Create a “New Folder“.
Move the required QuickBooks Company Files to the newly created folder.
In case you have been using QuickBooks only on one computer, then it is easy to follow the said steps.
But in case you are using the same file on Multiple systems, then be sure to follow the “Next” steps.
Click on the Windows Start Button > Programs > QuickBooks > QuickBooks Database Server Manager.
Select on the “Scan Folders” Tab.
In case there is no folder that contains the required company File, then “Add a new Folder“.
Click on the “Scan” tab.
Click the “Close” Option once Scan is completed.
Finally Open the Company File.
See Also: How to rectify QuickBooks error code 3000?

Solution 5: Ensure that all the connected Computer are working on one single Domain
Be sure to contact a “Network Administrator” or an “IT professional” to connect all the computer systems on one single domain.
We hope that this article helped you to troubleshoot this error by your own. In case the issue is still not resolved, feel free to contact the QuickBooks Enterprise support team and receive step by step guidance to fix the issues. We are easily reachable at 1- 801-938-3241.

Similar Posts to Read

How to fix Error 6000 77 in QuickBooks desktop?

How to Fix QuickBooks Error 404?

Steps to Resolve QuickBooks Error 6000 80

Author's Bio: 

we are certified ProAdvisor, and providing free consultation and paid support