Even though Microsoft has depreciated Internet Explorer, many of its core functions are still in use.

When an application uses the .Net WebBrowser control, this uses the same controls that Internet Explored uses, which means the same security restrictions apply. This will help you create the necessary settings to allow proper functioning of the Shift4 i4Go v2 method of credit card tokenization.

Don't uncheck the box on the error message titled Continue to prompt when website content is blocked. This will stop all further security messages and may make troubleshooting harder. If you did uncheck this box, you can fix it by editing the following registry key: ​ HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain Set DisplayTrustAlertDlg to 1.

1. In the Windows Search bar, type "internet options"
   
    
    
    
    
    
    
    
    
   
   
   
   
2. Click Internet Options.
   
   
   
   
3. Click the Security tab, then Trusted sites and then click the Sites button.
   
   
   
4. In the Trusted sites window, type "http://*.execu-tech.com" in the Add this website to the zone: text box and then click Add.
   
   
   
5. In the Trusted sites window, type https://*.execu-tech.com in the Add this website to the zone: text box and then click Add.
   
   
   
6. In the Trusted sites window, type https://*.i4go.com in the Add this website to the zone: text box and then click Add.
   
   
   
7. In the Trusted sites window, type about:security_WRUN32.EXE in the Add this website to the zone: text box and then click Add.
   
   
   
8. Close all Internet Options windows and these error messages should be gone.