Symptom Windows XP stop responding when connected to the Internet, After you successfully installed Advanced Networking Pack on Windows XP. Cause It cause the Advanced Networking Pack included IPv6 Protocol. After the installation, IPv6 protocol and related services were started by default. Resolution To solve the problem immediately, Please follow the steps that listed below. 1.Use Administrator account to logon Windows XP. Go to Control Panel, and then open Network Connection. Right Click the network interface card that connected to the internet. Click properties. In the network interface card properties select IPv6 and then press Uninstall to remove IPv6 Protocol on the network interface card. Restart the computer. 2. Use Administrator account to logon Windows XP, Go to Control Panel, and then open Administrative Tools. Open Services. Disable and Stop the IPv6 related services.