We build. You grow.

Get best community software here

Start a social network, a fan-site, an education project with oxwall - free opensource community software

Understanding and Resolving QuickBooks Error 6123 | Forum

Topic location: Forum home » Support » General Questions
Linea Martin
Linea Martin Oct 12 '23


QuickBooks is a wildly well-known accounting program used by a multitude of firms across the globe. Like all programs there is a chance that it will be subject to periodic errors. A common error that could affect your workflow could be the QuickBooks error 6123. In this post we'll go over the root of this error, their effects, and, more important, how to fix the issue.


What is QuickBooks Error 6123?

QuickBooks Error Code 6123 can be a frequent issue that could happen when you try to access a file for your company. It's part of the series of -6000 issues with QuickBooks. These typically stem from problems with the company's files as well as network settings, and the program itself. The error 6123 is typically accompanied by an error message which reads similar to this: "Error -6123, 0: Connection to the QuickBooks company file has been lost."


What are the Causes of QuickBooks Error 6123?

There are a variety of factors that can cause the appearance of Error 6123:

A damaged company file: The main source of this problem is a damaged or defective corporate file. The cause can be many reasons, such as abrupt power interruptions and network problems, as well as problems with the storage space.

Third-Party Firewalls or Security Software: Certain third-party firewalls and security software can prevent QuickBooks from connecting to the company's file and cause error 6123.

Incompatible QuickBooks Versions: Utilizing an incompatible or outdated version of QuickBooks may cause this issue.

Problems with Network Configuration: Network settings that are not working properly including incorrect firewall configurations or problems with your host system could cause Error 6123.


Implications of QuickBooks Error 6123

QuickBooks Error 6123 could cause a variety of issues for your business

Unable to access Company File: The issue hinders your access to the company's files, meaning that you are unable to access your financial records or update your information until the issue is addressed.

Data Loss: In the event that the firm's file has been severely damaged it is at risk of losing data. It is essential to regularly backup your files in order to reduce the risk.


The loss of productivity: Error 6123 may affect your workflow and can lead to loss of productivity while you attempt to resolve the problem.


Resolving QuickBooks Error 6123

Let's now discuss how to fix QuickBooks Error 6123.


Step 1: Update QuickBooks

Check to see if you're running the most current version of QuickBooks. If not, you should update your software to the most recent version, because many problems can be resolved by software updates.


Step 2: Rename .ND and .TLG Files

·         Go to the folder that contains your company's files.

·         Locate documents with extension .ND (Network Data) and .TLG (Transaction Log).

·         Click right-click on these files, and change their names. Add "OLD" at the end of the file name (e.g., companyfile.qbw.nd.OLD).

·         Open the file of your company again.


Step 3: Disable Third-Party Security Software

Temporarily turn off any firewall or security program. Some of these programs can prevent QuickBooks from accessing your corporate database.


Step 4: Use QuickBooks File Doctor

QuickBooks File Doctor is software that is built in to instantly resolve a variety of company issue with file files. Take these steps:

·         Install QuickBooks Tool Hub on the official Intuit site.

·         Open QuickBooks Tool Hub and choose "Company File Issues."

·         Select "Run QuickBooks File Doctor" and follow the prompts on screen.


Step 5: Create a New User

If these steps don't work it is possible to start a new Windows user, and open QuickBooks using that profile.



QuickBooks Error 6123 could be a bit frustrating; however it can be resolved with correct actions. Regular backups of your business database are essential to avoid losing data due to these errors. If the issue continues or appears to be difficult, it's recommended to consult the QuickBooks specialist or customer service. Be aware that resolving your issue quickly ensures the financial information you have stored is safe and easily accessible.

Also Read: qbdbmgrn not running