How to Fix QuickBooks Error 6123, 0

4 min read

Encountering an error while managing your business finances can be frustrating. QuickBooks Error 6123, 0 is one such hurdle that might pop up, especially when you are trying to open your company file or when attempting to switch to multi-user mode. This error can result from various issues, including network connection interruptions, corrupted data files, or outdated software. However, worry not, as resolving this error is feasible with the right steps.

Understanding QuickBooks Error 6123, 0

Before diving into the solutions, let's understand what might trigger this error:

  • Network issues: Problems with your network connection when accessing a company file over a network can lead to this error.
  • Corrupted data files: Damaged QBW files can prevent QuickBooks from accessing the data it needs.
  • Firewall settings: Sometimes, firewall settings might block the connection to QuickBooks, leading to this error.
  • Damaged Windows: Malfunctioning on your operating system can affect how QuickBooks performs.
  • Multiple QuickBooks database services running: Having multiple versions of QuickBooks installed can cause conflicts between different database services.

Step-by-Step Guide to Resolve Error 6123, 0

Here’s a structured approach to troubleshooting and resolving QuickBooks Error 6123, 0:

1. Use QuickBooks File Doctor

Start with QuickBooks Tool Hub, which contains the File Doctor tool that can resolve common issues including the 6123, 0 error:

  • Download and install the QuickBooks Tool Hub.
  • Launch the tool hub and select the Company File Issues tab.
  • Click on Run QuickBooks File Doctor. Choose your company file from the drop-down, or browse to locate it manually.
  • Select Check your file (middle option) and then Continue.
  • Enter your QuickBooks admin password and then Continue. The scan can take a few minutes.

2. Rename .ND and .TLG files

Your .ND and .TLG files help QuickBooks access your company file in a network. Corrupt or damaged .ND or .TLG files can cause errors:

  • Open the folder where your company file is saved.
  • Find the files with the same file name as your company files but with .ND and .TLG extensions.
  • Right-click each file and select Rename. Add the word “OLD” at the end of each file name (e.g., company_file.qbw.nd.OLD).
  • Reopen QuickBooks and try to log in to your company file.

3. Move Your Company File

If your company file is located on a network drive, try moving it to the local drive on your desktop to see if you can open it without the Qb error:

  • Locate the file on your network drive.
  • Copy the file and paste it to the desktop.
  • Open QuickBooks while holding the shift key and select Open or restore an existing company. Navigate to the desktop file you copied.

4. Check Your Firewall Settings

Ensure that your firewall settings are not blocking QuickBooks:

  • Go to the Control Panel and select System and Security.
  • Click on Windows Firewall and select Advanced settings.
  • Ensure that there are inbound and outbound rules allowing QuickBooks to access the network.

5. Create a New Windows User

Sometimes, creating a new Windows user with administrative privileges can resolve this error:

  • Go to Control Panel and click on User Accounts.
  • Select Manage another account and click on Create a new account.
  • Enter a name for the new account, select Administrator, and click Create Account.
  • Log in to the new user account and try to open QuickBooks with the company file.

Final Thoughts

Resolving QuickBooks Error Code 6123, 0 usually involves checking your network settings, ensuring your company file is not corrupted, and making sure your QuickBooks software is up to date. Follow the steps outlined above to troubleshoot and fix the issue. If you continue to experience problems, it may be helpful to consult with a QuickBooks professional for further assistance. Remember, keeping regular backups of your company files is a best practice that can prevent data loss and help you recover quickly from such errors.

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Chris Hemsworth 2
Books Handling specializes in providing businesses of all sizes with outsourced bookkeeping and accounting, payroll processing, taxation, and consultancy servic...
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