Download Microsoft Security Essentials Definition Update January 7, 2023 Download

Microsoft Security Essentials provides real-time protection for your home PC that protects against viruses, spyware and other malicious software.

Microsoft Security Essentials is a free download from Microsoft that is easy to install, easy to use and always kept up to date so you can be sure your PC is protected by the latest technology. It’s easy to see if your PC is secure – when you’re green, you’re smart. It’s that simple.

Microsoft Security Essentials runs quietly and efficiently in the background, leaving you free to use your Windows-based PC as you wish – without interruptions or long waiting times on your computer.

To download and install a Microsoft Security Essentials update:

1. Check whether your version of Windows is 32-bit or 64-bit.
2. In the table on the left, click the link that will work for your version of Windows.
3. Save the file to your desktop.
4. Once the file has finished downloading, go to your desktop and double-click the file (it will be called mpam-feX86.exe, or mpam-feX64.exe).
5. Follow the instructions to install the update.