1a. When (approx. date) did you install Microsoft Security Essentials (MSE)? 1b. Was MSE offered & installed via Windows Update or did you intentionally choose to install it? 1c. In Windows Explorer [WinKey+E], navigate to & right-click on • C:\Program Files\Microsoft Security Client <=this folder How to get and install the update Method 1: Microsoft Update. This update is available from Microsoft Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates automatically, see Windows Update: FAQ. Method 2: Microsoft Update Catalog Size. Download. Security Intelligence Update for Microsoft Security Essentials - KB2310138 (Version 1.401.1053.0) - Current Channel (Broad) MS Security Essentials. Definition Updates. 11/23/2023. n/a. 2171.8 MB. 2277281128. CarnegieMellons • 11 yr. ago. Yes, Microsoft Security Essentials is as sufficient if not more so than most anti-virus programs on the market currently. Keep in mind it is a home user based anti virus. If you're looking for the MEGASUPERAWESOMEINCREDIBLE type anti virus, expect to pay a hefty fee for enterprise level protection. Microsoft will not be offering an Extended Security Update (ESU) program for Windows 8.1. Continuing to use Windows 8.1 after January 10, 2023 may increase an organization’s exposure to security risks or impact its ability to meet compliance obligations. For more information, see Windows 8.1 support will end on January 10, 2023. Well what a nightmare this has been, but I finally got it sorted out. It all started with me doing a Windows 7 to Windows 10 upgrade. Unfortunately I had MSSE installed, and it somehow was still functional in Windows 10. Note: This issue only affects the Security update for Secure Boot DBX and does not affect the latest cumulative security updates, monthly rollups, or security only updates. Workaround: This issue can be mitigated on some devices by updating the UEFI bios to the latest version before attempting to install KB5012170 . Microsoft Security Essentials offers award-winning protection against these intruders without getting in your way. Downloading and installing Microsoft Security Essentials is free and easy. Once you have installed it, the software updates automatically once a day. We’re constantly tracking new threats and we keep your PC updated to help I clicked on the links you suggested. It seemed to download something but no box approved. I then pulled up MSE and clicked on update. It still shows a yellow band on top "PC Status: Potentially Unprotected" & "Virus and Spyware definitions are out of date". As Microsoft Security Essentials has proven to be an outstanding Anti-Virus/Malware protection program for all the current versions of Windows, will MSE still be supported with updates for Windows XP after April 2014? Or will Windows XP users be forced to find a competitive Anti-Virus package? Regards, Jack. This thread is locked. HuGrW.