QuickBooks error Code 6073 arises when a user tries to open a company file the same as other error codes in the series 6000. When you try to open a company file, and an error message appears on the screen all of a sudden, stating- QuickBooks is not able to open the company file. Furthermore, the error code message 6073 also suggests that another user may have opened the company file. Several factors can trigger the QuickBooks error 6073 99001. Read this blog until this end to explore various aspects of the error: 6073 and resolve it like a tech-geek. Can’t access your financial records due to QuickBooks Desktop error 6073? Dial our QuickBooks error support phone number (855)-365-6012 and ask an expert to resolve the error code.