Windows Firewall may block QuickBooks when its network permissions or firewall rules prevent the program from communicating properly. This can lead to connection problems, company file access issues, or errors when using QuickBooks in multi-user mode. To resolve the problem, check Windows Firewall settings and allow QuickBooks through the firewall on trusted networks. Make sure QuickBooks Database Server Manager is installed and configured correctly when sharing company files. Updating QuickBooks and restarting the computer can also help. Before changing security settings, create a backup and avoid disabling the firewall completely.
Visit here:- https://dataserviceteam.com/windows-firewall-is-blocking-quickbooks/