There are a number of solutions for annihilating QuickBooks error 6143 from your system. This section does a good job of elaborating on them.

Solution 1: Removing unwanted blanks in Company File Name

• Log out of QuickBooks and shut it down on all network workstations and servers.
• Now, open the QuickBooks installation folder on the server where the company file for QuickBooks is located.
• The folder of the company files can be navigated as follows ‘’C:/Users/ Public/ Public Documents/Intuit/QuickBooks/Company Files’’. This folder is normally where you may find the file.
• After doing a right-click on the company file, select on the Rename option.
• Now remove any spaces from the file extension and name of the company file.
• Open QuickBooks and perform the step that first led to error code 6143.
• If you're still seeing the QuickBooks Error 6143, move on to the next solution.

Solution 2: Terminating all QuickBooks processes

Any QuickBooks processes that would prevent the application from opening the company file should be closed. To proceed with the solution, you must log in as the system administrator. Press Ctrl + Shift + Esc at the same time to launch the task manager. Next, select the Users tab to see the processes associated with each user. If the problem persists, try the following solution.

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