If you install Service Pack 1 (SP1) for Windows XP and then use the System Restore feature to restore Windows to a state before the installation of the service pack, you may experience the following symptoms:
- You cannot create a remote access or Dial-Up Networking connection.
- All items on the "Network Connection" page of the New Connection Wizard are unavailable (dimmed).
- The Network Connections folder is empty.
- The Internet Connection Sharing (ICS) and Internet Connection Firewall (ICF) services do not start because of a dependency failure.
News source: W2S