A complete troubleshooting guide for QuickBooks Error 6073 QuickBooks Error 6073 can get displayed on your computer screen if you try to access a company file that is already in use by another user. You can use QuickBooks Tool Hub as it is the best tool in resolving some of the basic problems. Another way you can try it out is that rename the corrupted or unavailable network data files. Follow this linked guide and you will get to learn a lot more information about the issue. For additional help from Accounting Experts dial this number 1.800.579.0391. Source Link - https://hashnode.com/post/a-complete-guide-to-resolve-quickbooks-error-6073-ckzomhpn905q2r4s18hc28nly