Are you facing QuickBooks error code 6143 and unable to decide what to do? Well, need not to worry as this article will brief you about the factors causing the this error. Generally, this error might seen due to any malfunction in the company files. It can also be seen due to corrupted system files or incomplete/damaged installation. This can also be due to deleted or corrupted entries in the windows registry. Error code 6143 is seen with an error message and crashes the open Windows screen. In order to ensure that the tasks get completed smoothly and effectively, it is very important for us to fix the error.
To know more about QuickBooks error 6143, its causes and fixes make sure to read this post carefully till the end. You can also discuss your query with our professionals and our experts. Our team will ensure to provide you with immediate technical assistance.
What is QuickBooks Error 6143?
According to experts, the QuickBooks error 6143 usually seen when a user try to open, restore or access a company file. This error occurs due of damaged company files or multi-user mode issues. When this error encounters, QuickBooks may fail to open the company file and users may lose access to important company file temporarily. You may see the following error messages on your desktop screen:
QuickBooks is unable to open the company file or An error occurred while accessing the company file.
Factors causing the QuickBooks error code 6143
You can end up in QuickBooks error code 6143 due to the following factors:
- In case there are corrupted entries within the Windows system files.
- An incomplete QuickBooks desktop installation.
- Damaged or corrupted QuickBooks company file.
- You can end up in such an error when you reconnects with an error appears stating “Sorry! Something went wrong! Please try starting over“.
- When you are given a new credit card or account number, in some cases the bank might reconnect QuickBooks account and bank account together.
You might also read: Fix QuickBooks Error 6073, -99001 (Unable to open this company file)
Latest Methods for Troubleshooting QuickBooks Error Code 6143
The QuickBooks error code 6143 can be resolved easily, by carrying out a couple of methods and steps. Let us explore the methods one by one:
Method 1: Open a sample company file locally installed on a workstation
The very first method is to open a sample company file locally installed on a workstation. Opening the sample company file helps in verifying the issue lied with the company file. In case the sample company file doesn’t open and displays the issue, it is a sign of the QuickBooks installation being damaged. The steps to be followed are as follows:
- Firstly select Open a sample file in the No company open window.

- Select from the list of sample company files.
- In case the sample file opens, proceed to open the file locally. In case the sample file returns the same error message, then in that case repair the QuickBooks installation.
Method 2: Verify hosting settings
On workstation:
- Open your QuickBooks desktop.
- Then go to the File menu and move to Utilities section.

- From Utilities, hit a click on Stop Hosting Multi-User Access option.
On Server Computer
- Open QuickBooks desktop.
- Then go to the File menu and move to Utilities option.

- Here make sure that Host Multi-User Access option should be enabled. (Only the server computer should host the company file)
- If it is disabled, then enable it by clicking on Yes button.
Method 3: Configure antivirus software and firewall ports

In case the antivirus and firewall programs block the access to specific QuickBooks programs or files, then you might encounter these issues. You can also try to configure the firewall ports and in order to setup an exception to the antivirus software.
Method 4: Terminate all QuickBooks processes

Another method can be to close all QuickBooks processes. The steps to be followed in this are as follows:
- You need to log in as the administrator.
- After that press the Ctrl + shift + esc keys which will display the task manager.
- Now select the Users tab to Show processes for all users.
- Close all the QuickBooks-related tasks by clicking on the End task option.
Method 5: Open the company file locally
Opening the company file locally, helps you in testing if there is an issue with the location of the company file. In case the file opens while it is saved on the desktop, which means that the location is probably damaged. If the file doesn’t open up even after changing the location, there is a possibility that the file is damaged. The steps to be followed over here are as follows:
The procedure to be implemented to open the company file locally is elaborated as follows:
- At first open the folder having the company file.
- And then look for the file that has Extension of QB.
- Hit a right click on the File.
- And also select Copy.
- Now you need to move on the desktop.
- The next step is to select Paste and press the Control key.
- Once done, open your QuickBooks and move to the No company open window.

- And also choose open or restore an existing company.

- Finally close all QuickBooks processes.
Read Also: How to Mend QuickBooks Backup Error 2277?
Method 6: Rename the .ND and .TLG files
- Access the directory containing your company files.
- Select the File with the .ND and .TLG extension.
- Right-click on them and choose Rename.
- Add '.old' towards the end of the files and hit 'Enter' key.

- Restart the computer and check if the error code 6143 shows up again.
Conclusion!
By now, you must be well versed with the QuickBooks error code 6143 (Can't back up company file) and its quick fixes. However, if the error continues to trouble you or if you faced any difficulty then call our experts at 1-800-761-1787, and our QuickBooks error support team of professionals and certified ProAdvisors will ensure to provide you with immediate technical assistance. Our support services are available round the clock to offer you unparalleled assistance.
FAQs
Why QuickBooks Company files show errors?
Company file errors can be caused by damaged by:
1. Damaged Company file.
2. Company file extension changed
3. The file was changed from its original folder.
4. Company file is damaged by a virus.
When is QuickBooks Error 6143 observed?
This is a backup error in QuickBooks and the major instance of this error is when the Company file has issues or the structure of the backup functionality of QuickBooks is erroneous.
Can I use QuickBooks File Doctor against Error code 6143?
Yes, this tool can fix a majority of Company file errors in QuickBooks including Error code 6143.
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