I have been using the 2018 edition of QuickBooks Desktop pro for the last 6 months. This morning, when I tried to open up my QuickBooks file, I was denied access and received the QuickBooks Error 6143 message on my system. I have tried restarting my computer to get rid of the error but I still keep receiving the same message. I have a lot of bills that I need to enter but am unable to open the data file. Kindly help me to resolve the QuickBooks error 6143.