Incorrect network settings and data damage can make your QuickBooks Desktop behave unexpectedly, which would lead to your data loss or a long-term interruption to your workflow. You must be dealing with QuickBooks error 6143 since this is the error that indicates a data integrity issue, considering incorrect network settings and a corrupt company file.

To make sure that you start your work ASAP, let us perform some troubleshooting fixes to fix this error. You can bookmark this guide for further use.
Before you start
- You must have confirmation of exactly what the error is that you are dealing with.
- Backup your current company file to a safe location – even if it is partially damaged.
- Make sure you are running the latest QuickBooks Desktop release.
- Confirm you are logged in as Windows Administrator with full folder permissions.
- If you are on a network, note which computer is hosting QuickBooks.
- Close all other Intuit programs before you begin.
Common Reasons Behind the QuickBooks Error Code 6143
| Damaged Company File | The .QBW file may have internal inconsistencies or data damage that blocks access. |
| Incorrect Network setup | Incorrectly configured hosting or firewall rules are preventing connections when multiple users access QuickBooks |
| File location issues | Storing the company file on an external drive or in a restricted folder often blocks access to QB. |
| Incorrect Folder permissions | Windows does not provide QuickBooks with the necessary rights to open or write to the file. |
| Outdated QB Version | Compatibility issues arise if the program has not been updated while the file structure has changed. |
| Antivirus interference | Security software misreads QB processes as threats, blocking them from the network. |
| Network Data, or TLF Issues | These supporting files go out of sync and prevent the main file from loading. |
Learn to Fix QuickBooks Error 6143
Below are the solutions that would fix the error. We recommend that you continue with the solutions, and in case you need a quick fix if the issue is taking time, contact our senior QuickBooks specialist.
Solution 1: Update QuickBooks
Step 1: Download the update again
- Click on Help and choose Update QuickBooks Desktop.

- Click on Update now > Get Updates.

- Close and launch QuickBooks to install the update.
Step 2: End Task on the Programs
- Close QuickBooks programs.
- Right-click on the taskbar and click on Task Manager.
- Under the details tab, look for these background processes, select them, and click on End task.
- QBW32.exe or QBW.exe
- QBCFMonitorService.exe
- qbupdate.exe
- QBDBMgr.exe or QBDBMgrN.exe
- QBMapi32.exe
- Right-click on the icon of QuickBooks and click on Run as administrator.

- Now, run the update again.
Step 3: Run File Doctor
- Download and Install the QuickBooks Tool Hub.

- Close the QuickBooks application.
- Download the latest version (1.6.0.8) of the QuickBooks Tool Hub.
- You should save this downloaded file to an easy-to-reach location.
- Open the QuickBooksToolHub.exe file that you downloaded.
- Follow the on-screen steps and install the application.
- Agree to their terms and conditions.
- Once you have finished the installation, double-click on the Tool Hub’s icon to launch it.
Step 4: Run QuickBooks File Doctor
- Within the QuickBooks Tool Hub, click on Company File Issues.
- Click on Run QuickBooks File Doctor.

- In the application of File Doctor, choose your company file from the drop-down menu.
- In case you do not find any file, continue with the Browse and search option to get the file.
- Click on Check your file and hit Continue.
- Enter your QuickBooks login credentials and click on Next.
Solution 2: Rename the.ND and TLG files
The .ND and TLG files are configuration files of your QuickBooks files that permit the QB application to access a company file in a network or multi-user environment.
You see these 6143 series errors in QuickBooks when these .ND and .TLG get damaged. And, if you rename these files, you would not lose any data. These files get created again when you scan them with QuickBooks Database Server Manager.
- Open the folder where you stored your company file.
- Search for the files with a similar name to your company files with the extension .ND and .TLG.
- company_file.qbw.nd
- company_file.qbw.tlg
- Right-click on each company file and click on Rename.
- Add an extension OLD at the end (for example: company_file.qbw.nd.OLD).
- Launch QuickBooks again and log in to your company file.
If the QB error code 6143 occurs again, try the next solution.
Solution 3: Open a sample company file
The concept of using the sample company file is to test if there is a problem with the company file’s location. In case your sample company file failed to open, then it means your application is not properly installed.
- Open the No Company Open window, click on Open a Sample File.

- Choose any company file from the list.
If the sample company file opens up, apply solution 4. If not, repair your QuickBooks installation files.
Solution 4: Copy your QuickBooks file to the Desktop
- Copy the company file to the Desktop and open it to check whether there is an issue with your company file’s location.
- When the files open up from the desktop, it means your file location is damaged.
- You must have saved your file in the sub-folders that would have exceeded the file system path limitation.
- In case you change the company file’s location and still the file is not opened, it means you have a damaged company file.
- Open the folder with your company file.
- You can search for the file with the extension .QBW.
- Copy the company file.
- Now, right-click anywhere on the desktop and paste the file.
- Hold the control key and launch QuickBooks. It will open the No Company Open window.
- Click on Open or restore an existing company.
- Now, go back to your desktop screen, fetch the company file, and open it.
Confirm if the error 6143 is resolved or if it still requires another solution. If you are still facing the QB error code 6143, try the next solution 5.
Solution 5: Restore a backup
- While restoring a backup company file, QuickBooks uses the backup to create a new company file (.qbw).
- Click on the File menu and choose Open or Restore Company.
- Click on Restore a backup copy and hit Next.
- Choose Local Backup > Next.

- You can browse your PC to fetch the backup QB company file.
- Choose an easy-to-reach folder to save your restored company file.
- Click on Open, and to avoid overwriting the same files, you can rename the existing company file.
- Once done, click on Save.
Solution 6: Use the ADR Tool to restore your backup
- On your desktop, create a new folder with the name QBTest.
- Open the company file’s folder.
- Fetch the .tlg file in your company file’s folder. To remind you, it has a similar name to your company file.
- In case you are not able to identify the .tlg file, use these steps to confirm the file.
- Press Windows + E and launch the File Explorer.
- Click on Organize and select Folder and search options.
- Click on Hide extensions for known file types.
- Click on Apply > OK.
- Copy the .tlg file (Corresponding) of your company file.
- Paste it into the QBTest folder.

- Open your QuickBooksAutoDataRecovery folder.
- Copy the QBW.adr file and paste it into the QBTest folder.
- Now, you have the QBW.adr and .tlg files in the same QBTest folder.
- Right-click on the .QBW.adr file and rename it.
- Delete the file with the extension .adr.
- Launch QuickBooks and open your company file that you previously saved in the QBTest folder.
- Click on File and select Utilities.
- Choose Verify Data and confirm the data integrity of the file you have recovered.
Recover the latest transactions using the QBW.adr and TLG.adr files
- On your Desktop, create a new folder with the name QBTest.
- Open the company file’s folder and search for the QuickBooksAutoDataRecovery folder.
- Now, look for .TLG.adr. And QBW. adr files.
- These files have a similar name to your company file.
- In case these files .TLG.adr and QBW.adr are not identified. Use these steps to fetch them:
- Press Windows + E key and open the File Explorer.
- Click on Organize and choose Folder and search options.
- Click on Hide extensions for known file types.
- Click on Apply and hit OK.
- Now, you need to copy the .TLG.adr and QBW.adr files and paste them in the QBTest folder.
- Remove the .adr file from the QBTest folder.
- Launch QuickBooks and open the company file that you have saved in the QBTest folder.
- Click on File, select Utilities, and click on Verify Data. This step will check the data integrity of the recovered file.

- If you find this company file fit to use, move the damaged company file to any other location.
- Now, you can copy the healthy company file from QBTest to its original location.
You can check these solutions for the following errors as well.
| Error | Possible Cause |
| -6176,0 | Your firewall blocks the connection between two computers |
| -6143, -107 | The .TLG file is damaged |
| -6143, -1076 | Your QuickBooks installation is damaged |
| -6010, -100 | The company file is hosted by a computer that’s not the server. |
| -6138, -105 | The company file is hosted by a computer that’s not the server. |
| -6210, 0 | The company file is hosted by a computer that’s not the server. |
| -6189, -83 | The company file is hosted by a computer that’s not the server. |
| -6190, -83 | The company file is hosted by a computer that’s not the server. |
| -6012, -1061 | Wrong network setup |
| -6144, -82 | Wrong network setup |
| -6143, -82 | Wrong network setup |
| -6129, -101 | Wrong folder permissions or the QB Database Server Manager isn’t working right |
| -6190, 816 | A user is in single-user mode instead of multi-user while they work in the file. It can be a mismatch between the transaction log file (.tlg) and the company file (.qbw) |
| -6190, -85 | A user is in single-user mode instead of multi-user while they work in the file. It can be a mismatch between the transaction log file (.tlg) and the company file (.qbw) |
| -6190, -82 | A user is in single-user mode instead of multi-user while they work in the file. It can be a mismatch between the transaction log file (.tlg) and the company file (.qbw) |
| -6143, -832 | Hosting is on or the .ND file doesn’t work right |
| -6144, -304 | Something went wrong when you tried to open QuickBooks |
| -6190, 1005 | Something went wrong when you tried to open QuickBooks |
| -6189, 1005 | Something went wrong when you tried to open QuickBooks |
| -6143, -305 | Wrong network setup, or there’s damage to your company file |
| -6073, -816 | Multiple computers are hosting the file, firewall settings block the connection, or there’s damage to the company file |
| -6144,-103 | The .ND file has an incorrect path to your company file, or there’s damage to the QuickBooks Database Manager Windows user account |
| -6144, 0 | The .ND file has an incorrect path to your company fil,e or there’s damage to the QuickBooks Database Manager Windows user account |
| -6120, 0 | One of the workstations is hosting the company file, or the firewall port (8019) is blocked |
| -6087, 0 | File is open locally |
| -6131, 0 | File is open locally |
| -6147, 0 | You open the company file or restore a company backup (.QBB) |
Pro-tips to Avoid QuickBooks Error 6143
- Keep the file path short.
- Label backups with date/time.
- Regularly run the Verify Data & Rebuild Data utility.
- Update the QuickBooks Database Server Manager.
- Document your network setup.
Conclusion
QuickBooks error 6143 is not a common error and indicates that something is wrong with how QuickBooks Desktop is accessing or reading your company file. We have shared all the solutions that have worked for QuickBooks users to resolve the error. However, depending on your system settings, network settings, and .tlg and .ND files, you may need our QuickBookSupportNet specialist to fix the error.
If you are running a business where downtime costs real money, do not hesitate to contact a QuickBooks expert at +1(866)500-0076.
Frequently Asked Questions
What is the QuickBooks error code 6143?
QuickBooks 6143 error is an issue within the 6XXX series error that belongs to either damaged or corrupt network files or incorrect network setup.
How can I resolve the error 6143 in QuickBooks?
In short, you could resolve it by renaming the .ND and .TLG file, or using a restoration of a backup. If you are looking for a quick fix, contact our senior QuickBooks specialist at +1(866)500-0076.
What are.ND and .TLG file in QuickBooks?
Network file, that is .ND file is a Network Data file that allows you to manage user access and communicate with the company file in a multi-user environment. Whereas the Transaction Log file .TLG file is a set of records that contains changes in your company file(s).
What is the purpose of .ND File and .TLG file?
The purpose of The .ND file is to enable QuickBooks Desktop to connect with your company file, on the other hand. The .TLG file’s purpose is to record all the transactions that you have made in the company file.
