While trying to backup the company file data is you get an error message that reads “QuickBooks unable to backup company file”, then most probably there is a damage in your company file data. In this article we have listed every single reasons for the occurrence of company file backup error in QuickBooks along with some top preferred solutions to fix it. For any help related to QuickBooks you can reach us at our QuickBooks Desktop Technical Support Number (844)-932-1139.