How to use File Doctor to fix company file issues in QuickBooks Desktop. If you're having trouble opening your company file, QuickBooks. Helps You to Troubleshoot QuickBooks Company File and Network Issues. QuickBooks File Doctor is utilized to analyse and resolve technical errors affect the Company file. It assists in fixing data damage and series error. QuickBooks File Doctor is a tool introduced by Intuit to fix many of the common QB network related issues to call us 1800-993-4190.