I've moved your post to our Home & Home office area for better attention.
Could you please let us know some of the below information ;
What is the operating system installed ?
Did you have / Do you currently have any other security software in the PC ?
Do you received any alerts in the computer while going online .
How is the computer connected to internet ? DSL/Wireless/Cable
Can you post us with the screenshot of the said error message .
Operating System is XP Pro
No other security software is running
No alerts appear on the screen
I can't post a screenshot but the error message is: "The last automatic update did not complete successfully" It appears when you place the mouse arrow over the red McAfee shield in the system tray.
When I open the console the Security Center Communication is red with an update failure notice. The troubleshooting tips do not help.