When Quickbooks software fails to connect with company files, then a "QuickBooks cannot communicate with the company file" error box pops-up on display. Many errors can cause this issue, but the main reason that triggers this error is misconfigured windows firewall settings, which indicates you to configure your windows firewall software or download the QuickBooks Diagnostic Tool for error resolution. For detailed troubleshooting, instructions keep reading this article. In case if you are still not sure how to fix the "QuickBooks cannot communicate with the company file" error, then feel free to get in touch with our certified experts now dial (844)-888-4666.