QuickBooks Error 6147 and Quick Solutions to Fix it Sometimes, you might fall into the trap of QuickBooks Error 6147, which restricts you from opening the company file and backup file. This error can strike on several occasions, like while opening the company file in single-user mode, accessing it from the server, or opening it from an external storage device. There are also several reasons for the occurrence of the same, and in this article, we will first discuss the reasons that trigger the error and later the solutions that you can implement to resolve it. Keep reading the complete article so that you can be well aware of everything that needs to tackle the error the next time when it strikes your QuickBooks Desktop.