Coming across QuickBooks Error Code 6143 can be a bit of a bother. Read our article to help you bring about resolutions for the same. One of the best aspects of using QuickBooks is that sorting out errors and problems in the software is not too hard. You can sort out almost all the errors on this application without too much hassle, including QuickBooks error code 6143. The firm files are simply malfunctioning in this error code. Users of the application can also identify this issue when the system files are damaged or corrupt. When this occurs, a warning message is displayed on the screen, which may cause a software or OS crash. Therefore, any registry damage can result in error code 1643.