Download the latest security intelligence updates for Microsoft Defender Antivirus, Microsoft Security Essentials (MSE), System Center Endpoint Protection (SCEP) and other antimalware.

Oct 29, 2025 · Microsoft Security Essentials is a free download from Microsoft that is simple to install, easy to use, and always kept up to date so you can be assured your PC is protected by …

6 days ago · Keeping Microsoft Security Essentials up-to-date ensures that your computer is protected at all times and that the latest viruses and spyware variations will be detected during …

Dec 3, 2025 · Learn what Microsoft Security Essentials is, features, pros, cons, security benefits, risks, and modern alternatives for Windows protection.

Dec 19, 2024 · In a surprising turn of events, Microsoft announced recently that it will be discontinuing its long-running antivirus program, Microsoft Security Essentials, and will now be …

2 days ago · Download Microsoft Security Essentials Update - Provides real-time protection for your home PC that guards against viruses, spyware, and other malicious software.

Jul 24, 2025 · Security Essentials has begun to mature, although it's still rough at the edges. Microsoft Security Essentials (MSE) is a free program that protects computers from viruses …