Article ID: 2688686 - View products that this article applies to.
NoticeThe information and the solution in this document represent the current view of Microsoft Corporation on these issues as of the date of publication. This solution is available through Microsoft or through a third-party provider. Microsoft does not specifically recommend any third-party provider or third-party solution that this article might describe. There might also be other third-party providers or third-party solutions that this article does not describe. Because Microsoft must respond to changing market conditions, this information should not be interpreted to be a commitment by Microsoft. Microsoft cannot guarantee or endorse the accuracy of any information or of any solution that is presented by Microsoft or by any mentioned third-party provider.
Microsoft makes no warranties and excludes all representations, warranties, and conditions whether express, implied, or statutory. These include but are not limited to representations, warranties, or conditions of title, non-infringement, satisfactory condition, merchantability, and fitness for a particular purpose, with regard to any service, solution, product, or any other materials or information. In no event will Microsoft be liable for any third-party solution that this article mentions.
This article describes how to identify and then remove all traces of a security program from a computer. To help prevent issues that may occur due to a conflict between programs, it is important to remove all other security programs before you install Microsoft Security Essentials (MSE).
Make sure to remove all other security programs that are installed on the computer before you install MSE. This includes any free or trial products that were pre-installed when you bought the computer, even if they were never activated.
Note Before you uninstall your virus scanner, make sure that the Windows Firewall is enabled, and make sure that programs that were not previously approved by you do not have access to the Internet through the firewall.
An antivirus program helps protect your computer from viruses. Don't download or open files from sources that you do not trust, visit websites that you do not trust, or open email attachments when your antivirus program is disabled. For more information about computer viruses, see Microsoft Knowledge Base article 129972: Computer viruses: description, prevention, and recovery
If you aren't sure what security programs are installed on the computer, you can use the AppRemover utility from OPSWAT, Inc. to identity the software. To obtain AppRemover, visit http://www.appremover.com/
After you identify the security programs that are installed on the computer or have been partially removed from the computer, you can use a cleanup tool or instructions from the security program manufacturer to completely remove the program.
The following list provides links to the instructions and cleanup tools that are available from many security program manufacturers: