QuickBooks Error Code 6000 77 usually occurs when you try to access a company file stored in the system but QuickBooks cannot read it. There could be several reasons for this error, such as a damaged or corrupted company file, You now know about the causes of this error and the methods to resolve it. We anticipate the blog was helpful, and your QuickBooks is running error-free again. You can feel free to ask for help from QuickBooks Data service professionals via +1(855)-738-0359