Fix for red X on network icon Windows Vista
If you have a red X on your network icon or are unable to open the Network applet this will fix it.
1. Go to Start > Run > cmd
2. Copy/paste the following line and hit your Enter key:
Net localgroup Administrators localservice /add
3. Reboot your computer.
If you don't have the Run command showing when you click the Start button
follow the instructions below. HTH
To add the Run command on the Start menu in Vista do the following.
Right click the start button
On the Start menu tab click Customize
Scroll down and check Run command
Click Ok and then Apply/Ok to save the changes