QuickBooks Error 6129 0 display when database connection verification fails or Quickbooks tried to access company files. Because of this error, we are unable to open company records. If you are on a network the most likely cause is a network problem where it can’t find the computer or server that holds the file.

This article contains lots of information that shows you the reason behind this error and how to fix this error(-6129,0). In addition, this article will help to troubleshoot some common error related to Quickbooks. Contact our expert via Quickbooks Technical support phone number to get immediate help.

Cause of error -6129, 0
All computers in a multi-user configuration are not running the latest release of QuickBooks
Because of corrupted network data files.
The mismatch between the domain of client and server.
Damaged or corrupted Quickbooks installation files.
How to fix this error
There are a number of troubleshooting steps to resolve this error that is discussed in detail in this article linked below. Before proceeding to those steps, ensure that all computers in your QuickBooks installation have been updated to the latest QuickBooks release.

Solution 1: Log into Windows as an administrator.
First, try opening another company file. You need to log into Windows as an Administrator to update your company file. If you do not have an Administrator login you can use, find support for Windows or an IT Professional for assistance.

Solution 2: You can perform this solution when you experience Easy-Step Interview.
Click Leave when you are In Easy-Step Interview.
See the message of “Save the file?” click yes.
Enter a file name and then click save option.
Solution 3: If you use Safe Mode on Windows, disable antivirus and other software.
Restart the computer in Safe mode.
Disable your antivirus software
Create the new company file.
Restart the computer in normal mode.
Open QuickBooks and your company file
Solution 4: Rename the QuickBooks Network Descriptor (.nd )files.
Check in your hard drive on the computer that your QuickBooks file folder for files named .nd.
Now rename the file, right click the .nd file with an old name of company file and choose rename.
Type .OLD at the end of the file name and press Enter.
If you access the same company file on multiple computers, please follow the next steps. If you only use QuickBooks on one computer, you can open the company file now.
Click the Windows Start button and choose Programs > QuickBooks > QuickBooks Database Server Manager.
Select the Scan Folders tab.
If there is no folder that contains the company file, click Add Folder to add it.
Click Scan.
Click Close when the scan is completed.
Open the company file.
Solution 5: Create another folder and move the QuickBooks company files.
Create another new folder.
Move the QuickBooks company files to the newly created folder.
If you have been using QuickBooks on one computer, it is easy to open QuickBooks company file using new folder.
But, If you use the same file on multi-system, you should perform next steps.
Click the Windows start button of Windows and select Programs > QuickBooks > QuickBooks Database Server Manager.
Select the Scan
If there is no folder that contains the company file, click Add Folder to add it.
Click the Scan.
When scan has completed, click
Open QuickBooks company file.
Solution 6: Be sure that all computer system are working on one domain.
You should contact a Network Administrator or an IT expert to add your computer systems to the domain. Above all information is about to fix Quickbooks error code 6129 0.