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. QuickBooks error 6143 is 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. The 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 the user to fix the error.