Because of corrupted files, erroneous file extensions, or network problems, users are unable to access their company data when they see the Can’t Open Company Files error in QuickBooks. This can be fixed by utilizing QuickBooks File Doctor, renaming.ND and.TLG files, confirming the file location, or changing the permissions on the company file folder. Additionally, our QuickBooks Experts Team can be reached by phone at 1.855.738.2784.