Windows Defender is built into the latest versions of Windows and helps guard your PC against viruses and other malware. For a PC running an older version of Windows 7, you can download Microsoft Security Essentials for the low, low price of free. What's included. Apr 17, · Before you install the correct version of the Microsoft Security Essentials virus and spyware definition updates, you must know: Whether Windows XP, Windows Vista, or Windows 7 is running in a bit or a bit operating environment. Whether you are logged on to . Looking for updates to Windows? As of November , Microsoft Windows Updates are now available for download from the Microsoft Update Catalog only. As always, all updates will still be available via WSUS, SCCM, and Windows Update – this change is only for . Microsoft Security Essentials (XP) full offline installer setup for PC There are a host of nasty intruders on the Internet including viruses, trojans, worms and spyware. Microsoft Security Essentials for Windows XP offers award-winning protection against these intruders without getting in your way/10(). Mar 21, · From the issue description, I see that you are unable to install Windows Update KB for Microsoft Security Essentials (MSE) on Windows XP computer. I can imagine the inconvenience you have experienced. We are here to help and guide you in the right direction.