Error 6123 0 popping up while running QuickBooks? Our team can fix it for you. We are a team of certified QuickBooks pro advisors who are well-versed with the reasons that stem up QuickBooks error 6123 0 and the steps that need to be taken to fix the problem. It appears with a notification message saying “connection to the QuickBooks company file has been lost” while trying to upgrade the QuickBooks to the latest version. The reasons could be a damaged QuickBooks program file, misconfigured firewall settings, damages Windows OS, or maybe multiple versions of QuickBooks database services are running.
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Step 1: Download and install the QuickBooks Tools Hub
The QuickBooks Tool Hub helps fix common errors. For the best experience, we recommend using Tool Hub on Windows 10, 64-bit.
Close QuickBooks.
We recommend you download the most recent version (1.4.0.0) of the QuickBooks Tool Hub. Save the file somewhere you can easily find it (like your Downloads folder or your Windows desktop). Note: If you've already installed Tool Hub before, you can find out which version you have. Select the Home tab. The version will be displayed on the bottom right or you can select About to view the version.
Open the file you downloaded (QuickBooksToolHub.exe).
Follow the on-screen steps to install and agree to the terms and conditions.
When the install finishes, double-click the icon on your Windows desktop to open the tool hub.
Step 2: Run QuickFix my Program
In the QuickBooks Tools Hub, select Program Problems.
Select QuickFix my Program. It will take about a minute to run. If you have multiple versions of QuickBooks installed, it can take longer. Wait until the progress bar is done.
When QuickFix my Program is finished, open QuickBooks and verify your issue is fixed.
If you still see Error -6123, 0, move on to Step 3.
Step 3: Run File Doctor
If QuickFix my Program didn't work, we can use File Doctor to repair your company file. File Doctor automatically scans and fixes common QuickBooks Desktop data issues.
In the QuickBooks Tools Hub, select Company File Issues.
Select Run QuickBooks File Doctor.
When QuickBooks File Doctor opens, choose your company file from the ▼ drop-down. If you don't see it, select Browse to search your computer for the file. The file will look like this: [your company name].qbw.
Select Check your file, then Continue.
Enter your QuickBooks admin password, then select Continue. File Doctor will start repairing your file. This may take a while.
When the repair is finished, select your company from the list, then select Open QuickBooks.
More info: Cloud based QuickBooks | QuickBooks Pro vs Premier | QuickBooks for Nonprofits
Regards,
Bruce
QuickBooks helps register all the transactional reports and data between different companies. While upgrading a company file to QuickBooks, opening a company file from a network server or restoring a backup, you may encounter QuickBooks Error 6123. You may be unable to restore the backup. In this article, you may find a solution to the error encountered.
QuickBooks error 6123 0 is caused due to:
Restoring a company file from an external storage device.
Disrupted network connection from the host server.
Damaged QuickBooks Company data file.
Firewall settings interrupting QuickBooks to open the company
McAfee Antivirus service is installed on the computer. It interferes with QuickBooks Desktop Services.
Damaged Windows.
Steps to Resolve QuickBooks Error 6123
Download QuickBooks File Doctor
Download and Run QuickBooks File Doctor.
Then after, Browse the Company File.
Select Check File Damage Only, then Diagnose File.
Enter your Admin Password and then select OK.
Afterwards, select Open File in Newer Version or Repair File in the existing version.
Follow the remaining steps appearing on the screen.
Reboot your computer.
Rename .ND and .TLG file
Open the folder having the company file.
Select the corresponding .ND file of your company.
Right-click on the company file and select Rename.
Rename .ND file to .ND.OLD.
Similarly select .TLG file and Rename .TLG file.
Rename .TLG file to .TLG.OLD.
Now, Open your QuickBooks Company File.
I hope both these methods will be helpful to resolve QuickBooks error 6123.
Mark Wilson