Try this easy fix if you cannot open the QuickBooks company file

One of the following reasons could be the cause of cannot open the QuickBooks company file insufficient permissions, network problems, or file corruption. To diagnose and resolve the issue, make sure the file is on the local drive, update QuickBooks to the most recent version, and utilize the QuickBooks File Doctor tool. Call QuickBooks at 1.855.856.0042 for the best help available.