Use This Guide to Troubleshoot QuickBooks Error 6123

QuickBooks Error 6123 is a problem that arises when the software encounters difficulty while opening or restoring a company file. Various factors, including network problems, damaged company files, or issues with multi-user mode, can trigger this issue. Conflicts with third-party security software or inadequate QuickBooks file access permissions may contribute to the error. 

Resolving Error 6123 in QuickBooks involves troubleshooting steps like updating QuickBooks to the latest version, ensuring network connectivity, and using the QuickBooks File Doctor tool for file repair. Seeking assistance from our QuickBooks support or referring to online resources can provide tailored solutions for effective issue resolution. Just call our team at 855-955-1942.

What are the reasons that can lead to QuickBooks Error 6123?

Various factors can cause QuickBooks Error 6123. 

  • Disruptions in network connectivity or configuration problems can trigger Error 6123.
  • Corruption or damage to QuickBooks company files may lead to this error.
  • Conflicts with antivirus or firewall settings may interfere with QuickBooks operations.
  • Problems with multi-user mode configurations can contribute to Error 6123.
  • Errors during QuickBooks installation or update processes may result in this error.
  • Insufficient user permissions or restrictions on QuickBooks file access can cause the error.
  • Using an outdated version of QuickBooks may lead to compatibility issues, triggering Error 6123.

Solve the Issue that is Bugging Your Desktop Just Use this Solution

Solution: Use the QuickBooks Auto Data Recovery (ADR) on your device

QuickBooks Auto Data Recovery (ADR) can help recover lost data and fix issues like QuickBooks Error 6123.

  • Before attempting any recovery, create a backup of your company file as a precaution. Look for a folder named “Auto Data Recovery” in the same location as your company file.
  • In the “Auto Data Recovery” folder, there should be two types of files: QBW.adr and .TLG.adr. Identify the most recent files.
  • Copy the .QBW.adr and .TLG.adr files from the “Auto Data Recovery” folder and paste them into the folder where your company file is located.
  • Remove the “.adr” extension from the copied files. Rename them to match your original company file name.
  • Confirm that the file sizes are similar to your original company file. If significantly smaller, the ADR files may not be usable.
  • Launch QuickBooks and attempt to open the company file that now includes the recovered ADR data.
  • Review your company file for accuracy and verify that the recovered data is complete. Create a copy of your damaged company file for further analysis.
  • Open QuickBooks, go to the “File” menu, select “Utilities,” and then choose “Rebuild Data.” Follow the prompts. After the rebuild process, verify your data to ensure integrity. 

Solution 2: Disable your antivirus temporarily

Disabling your antivirus and firewall temporarily can be necessary for troubleshooting purposes. However, it’s crucial to exercise caution, as doing so can potentially expose your computer to security risks.

  • Find the antivirus icon in your system tray or taskbar. 
  • Look for an option like “Disable,” “Turn Off,” or “Pause Protection.” 
  • The exact wording may vary based on your antivirus software. Select the duration for which you want to disable the antivirus. 


  1. What is QuickBooks Error 6123,0?
    • It’s an error that users encounter when trying to open their company file over a network, in multi-user mode, or during a restore process, indicating a connection issue with the server.
  2. What causes QuickBooks Error 6123,0?
    • Causes include disrupted network connection to the server, damaged QuickBooks company files, firewall settings blocking QuickBooks, damaged QuickBooks database services, or outdated QuickBooks software.
  3. How can I fix QuickBooks Error code 6123,0?
    • Solutions involve running the QuickBooks File Doctor, disabling antivirus temporarily, renaming .ND and .TLG files, moving the company file to a different location, and ensuring QuickBooks is up to date.
  4. Can QuickBooks File Doctor resolve Error 6123,0?
    • Yes, QuickBooks File Doctor can diagnose and potentially fix network issues and company file damage that might be causing the error.
  5. Do I need to back up my data before fixing Error 6123,0?
    • It’s always a good practice to back up your data before performing any troubleshooting steps to prevent data loss.
  6. What should I do if I encounter Error 6123,0 while upgrading my company file?
    • Ensure QuickBooks is updated to the latest version, and run the File Doctor. If the issue persists, try restoring your backup in a new file.
  7. Can firewall settings cause QuickBooks Error 6123,0?
    • Yes, if your firewall blocks QuickBooks communications, it can lead to this error. Adjusting your firewall settings may resolve the issue.
  8. Why does Error 6123,0 occur when opening a company file over a network?
    • This can happen due to network setup issues, damaged network data files, or because the server hosting the company file cannot be reached.
  9. What if Error 6123,0 occurs during a multi-user mode setup?
    • Ensure the QuickBooks Database Server Manager is installed on the server and that it’s properly set up for multi-user mode. Also, check network connectivity and settings.
  10. Is it necessary to reinstall QuickBooks to fix Error 6123,0?
    • Reinstallation is a last resort. Try other troubleshooting steps first, like running the File Doctor, renaming .ND and .TLG files, and ensuring your network is stable. Only consider reinstallation if all other solutions fail.


QuickBooks Error 6123, associated with company file opening or restoration issues, demands careful troubleshooting. Resolving this error entails updating QuickBooks, ensuring network connectivity, and utilizing tools like the QuickBooks File Doctor. Seeking expert support is advised for tailored solutions to rectify Error 6123 effectively and call 855-955-1942.

You can also read this blog – QuickBooks Error 6209: Effective Solutions for Opening Company Files


Oscar Joe

Hello, I'm Oscar Joe, and I'm experienced in accounting & Bookkeeping. I work at Data Service Solutions, where I specialise in fixing problems with QuickBooks. If you face any issues with QuickBooks, feel free to contact us anytime at +1-(855)-955-1942. We're available 24/7 and are here to help you with any questions or concerns you have while using QuickBooks. Recommended To Read: QuickBooks Error 15203 QuickBooks Error 6144 82 QuickBooks Multi User Error Code H202, Payroll Tax Table Update in QuickBooks desktop, QuickBooks Crashes When Opening Company File Unable to Backup QuickBooks Company File, QuickBooks Payroll Error Ps038

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