Network Connection for QuickBooks Network Connection Failure When the software is unable to connect to the corporate file over the network, failure results. It might be brought on by firewall blockage, misconfiguration, or network problems. Verifying network settings, firewall permissions, and the accessibility of the server holding the company file are all steps in the troubleshooting process. If you require instant support, you can get in touch with the QuickBooks Support Team at the aforementioned 1-855-856-0042 for prompt assistance and direction.