Article ID: 944168
Existing subscribers will continue to be supported throughout the term of their subscriptions. Existing subscribers can reinstall by following the steps to download a trial
(http://windows.microsoft.com/en-us/windows/security-essentials-onecare), and can still add a PC to their existing OneCare circle
Learn more about end of sale for OneCare
On September 29th 2009, Microsoft introduced Microsoft Security Essentials, a FREE consumer anti-malware solution for Genuine Windows based PCs.
Learn more about Microsoft Security Essentials or download from Microsoft directly at: http://www.microsoft.com/security_essentials/default.aspx
This article describes how to run a tune up in Windows Live OneCare. A tune up helps improve the performance and safety of the computer.
When you run a tune up, Windows Live OneCare checks for updates, defragments the hard disk, removes unnecessary files, checks for viruses, and checks for files that need backup. You can start a tune up yourself, or you can schedule a tune up to run at set intervals.
To run a tune up immediately, follow these steps:
For more information about support for OneCare, see the "Windows Live OneCare Help Center" topic. To do this, visit the following Microsoft Web site:
Article ID: 944168 - Last Review: April 11, 2013 - Revision: 4.0
Retired KB Content Disclaimer
This article was written about products for which Microsoft no longer offers support. Therefore, this article is offered "as is" and will no longer be updated.