Article ID: 930159
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
When you try to install Microsoft Windows Live OneCare, you receive the following error message that has the error code 0019-80070643:
OneCare installation could not complete. One or more components of Windows Live OneCare did not install successfully. Please contact support for assistance with correcting this issue.
The Firewall component of OneCare was not installed correctly. This problem may have happened because a previous installation of the OneCare Firewall is corrupted or because Microsoft Windows XP system files are damaged.
Method 1: Remove third-party antivirus programs and firewall programsTo remove third-party antivirus programs and firewall programs, follow these steps. Important This article contains information that shows you how to help lower security settings or how to turn off security features on a computer. You can make these changes to work around a specific problem. Before you make these changes, we recommend that you evaluate the risks that are associated with implementing this workaround in your particular environment. If you implement this workaround, take any appropriate additional steps to help protect the computer.Warning This workaround may make a computer or a network more vulnerable to attack by malicious users or by malicious software such as viruses. We do not recommend this workaround but are providing this information so that you can implement this workaround at your own discretion. Use this workaround at your own risk.
Method 2: Remove the OneCare Firewall components and reinstall OneCare
Method 3: Run the WMIC/MOFCOMP steps
Article ID: 930159 - Last Review: April 11, 2013 - Revision: 3.0
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.