This includes any free or trial products that were pre-installed when you bought the computer, even if they were never activated.

Make sure to remove all other security programs that are installed on the computer before you install MSE.

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). This article describes how to identify and then remove all traces of a security program from a computer. In no event will Microsoft be liable for any third-party solution that this article mentions. 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. Microsoft makes no warranties and excludes all representations, warranties, and conditions whether express, implied, or statutory. 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. Because Microsoft must respond to changing market conditions, this information should not be interpreted to be a commitment by Microsoft. There might also be other third-party providers or third-party solutions that this article does not describe. Microsoft does not specifically recommend any third-party provider or third-party solution that this article might describe. This solution is available through Microsoft or through a third-party provider. The information and the solution in this document represent the current view of Microsoft Corporation on these issues as of the date of publication.

Best uninstaller bitdefender