1.Open your firewall’s main window.
2.Select “Setup” tab and click “Enter advanced setup” link.
3.Select “Web and email -> Protocol filtering -> Excluded applications”, click “Add” button and browse to TaxWorkFlow.exe.
4.Click OK.
5. Repeat steps from 3 to 4 again for the TWFPDFPrinter.exe file. It should be located in the TWFPDFPrinter subfolder of the application’s folder (by default it is usually C:\Program Files (x86)\TaxWorkFlow\TWFPDFPrinter\TWFPDFPrinter.exe).