Thread: Windows Live OneCare is about to expire, free software with Security Essentials.

You have to uninstall Live OneCare before you can add Security Essentials, it should take you through how to do this, here's a copy and paste of the instructions:

How to uninstall Windows Live OneCare


In Windows XP, click Start, click Run, type appwiz.cpl, and then press ENTER.

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In Windows Vista, click Start, click in the Start Search box, type appwiz.cpl, and then press ENTER.
In the list of installed programs, uninstall Windows Live OneCare.
Restart your computer.
If you can't uninstall OneCare or if you receive an error when you try to uninstall it, please follow the steps below.
Copy the following web address, open your Internet browser, paste the address in the address box of your browser, and then press ENTER.

http://go.microsoft.com/fwlink/?LinkID=81699 [English Only]


Click Save.
Select a location where you want to save the file, and then click Save.
Go to the location where you saved the file.

In Windows XP, double-click the file.

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In Windows Vista, right-click the file, and then click Run as administrator.
Click Run, and then click Continue.
Read the licensing agreement. If you agree to it, click I accept the terms of the End User Licensing Agreement, and then click Continue.
Click Clean.
After the clean-up tool finishes, click Restart Now.