A. Windows Live OneCare replaces the existing built-in firewall and although applications are enabled by default for communication, certain required ports aren't. Thus, when you attempt to create a VPN connection to a network, the process will appear to hang, then fail, at the username and password authentication stage. To resolve the problem, perform these steps:
- Start the Windows Live OneCare console (right-click the OneCare taskbar icon, which is normally a green circle with 1 in it, and select "Open Windows Live OneCare").
- On the left side of the OneCare dialog box under Other Tasks, click the "View or change settings" link.
- On the "Windows Live OneCare Settings" dialog box, select the Firewall tab.
- Click the "Advanced settings" button.
- Select the "Ports and Protocols" tab on the "Advanced settings" dialog box.
- Select the "VPN - General Routing Encapsulation (GRE)" check box, as the figureshows.
- Click OK to all open dialog boxes.