Microsoft Security Essentials 4.1 for Windows 8
According to Wikipedia, Microsoft Security Essentials does not run on Windows 8, which has an antimalware subsystem of its own. Guess what, they’re wrong!
Why Microsoft Security Essentials?
This is not an official updater! The MSE files have not been modified!
It supports Windows 8 RTM build 9200, but may work with older versions too.
The author is not responsible for any damages this mod may cause to your system.
Official MSE Beta Installer:
Microsoft Security Essentials 4.0.1111.0 Beta (x64): link 1 link 2 link 3
Microsoft Security Essentials 4.0.1111.0 Beta (x86): link 1 link 2 link 3
Unofficial MSE First Ever Installer for Windows 8:
Microsoft Security Essentials 4.1.522.0 Final (x64): link 1 link 2 link 3
Microsoft Security Essentials 4.1.522.0 Final (x86): link 1 link 2 link 3
Unofficial MSE First Ever Uninstaller for Windows 8:
Microsoft Security Essentials 4.1.522.0 Final (x64): link 1 link 2 link 3
Microsoft Security Essentials 4.1.522.0 Final (x86): link 1 link 2 link 3
Installation Guide:
- Install Microsoft Security Essentials 4.0.1111.0 Beta x64 or x86.
Run this program in compatibility mode for Windows 7. - If you see an error message: ”A newer version of Security Essentials is already installed on your computer.” Download/unpack and Double click on a “MSE_unregister.reg” file and try to install it again.
- Install Microsoft Security Essentials 4.1.522.0 (x64 or x86)
- Double click on a “MSE_register.reg” file and run Microsoft Securite Essentials.
Uninstall Guide:
Microsoft Security Essentials 4.1.522.0 can’t be uninstalled in ordinary way, please download and run the unofficial uninstaller from First Ever.
Please register on my website and if you have any questions, feel free to leave a comment!
Author: Marcin Grygiel aka Marcin-prv
Polski
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Cool, Thanks!!!!!!!!
Installing the Windows 8 RTM upgrade removes Microsoft Security Essentials and replaces it with a version of Windows Defender that looks exactly like MSE.
Has Microsoft developed MSE 4.1 or participated in its development in any way?
Windows Defender:
1. Includes features like the ELAM (Early Launch Anti Malware)
http://msdn.microsoft.com/en-us/library/windows/hardware/br259097.aspx
2. No tray icon – you don’t know it is working or not.
3. No Network Inspection System Engine (MSE has it).
In my opinion: Network Inspection System > ELAM
For more info visit: http://tinyurl.com/mse-on-win8/ (answers.microsoft.com)
Listen, Network Inspection System on 8 has been replaced by smartscreen and firewall.
all links broken !
OK, I will move everything to my server.
All the links are down douchebag!! Fix it!!!!!!!!!!
Please fix the links i have used alot of time to find a solution on this problem and this site had it well until i clicked the links
i really need this 
Please check my website on Thuresday 1st November…
All links are dead. Please reup!!! Thank you so much!
First of all I would like to apologise for the delay in releasing new version.
File currently being uploaded: Microsoft Security Essentials 4.0.1512.0 Beta
Now you can install old version of MSE but you have to wait a few days more for Security Essentials 4.1.522.0 (First Ever Update).
Testes and working but I have to create a new installer!
http://firstever.eu/download/
http://tinyurl.com/firstever-skydrive
http://tinyurl.com/firstever-dropbox
New version is AMAZING!!! Thank you so much!!!
Tom’s hardware link is wrong
you place this-http://http//www.tomshardware.com(error)
correct it..http://www.tomshardware.com
Thanks for the information!
Hi guys! Please leave your comments here If you are satisfied with MSE for Windows 8!
i have first install Microsoft essential 4 on window 8 but after getting updates it say window donot pass genuine test after this i am unable to uninstall it allthough i have try with your way.
so tell me how to uninstall it from my p.c.
You need the run the uninstaller as Administrator (right-click: Run as administrator)!
MSE for Windows 8 on 32 bit version run really fast. However, in 64 bit version it makes system starting slower a little bit ^^. Anyway, this version is really necessary and better than windows defender thousand of times^^. Thank you so much!!!
Hi,
Works also for Windows 2012. No problems so far.
Thanks, Marcin! I’ve been really looking forward to this update. Thanks for sharing your work!
You’re welcome!
it wont work for me ‘coz i did not pass Genuine Windows .. i tried so many times to run as Administrator but still no Luck!
here are the image links:
error msg after clicking the mse 4.1 install
http://goo.gl/OyBzr
did not pass chcek
http://goo.gl/2URv9
what will i do?? Please HELP..
follow-up to my previous comment..
I Followed every step but i stuck at step 1
this one
http://goo.gl/2URv9
i gues im doomed
You can not install Microsoft Security Essentials without Genuine Validation! You have to activate your copy of Windows 8 (true activation not crack).
not working,i follow step by step.
You’re doing it wrong or you don’t have a genuine Windows 8.
May I ask you a question: Windows 8 x64 or x86?
thanks dude very much
but u r wrong MSE can be installed in non genuine version of 8
I had installed
just u have to start the setup form x86 folder and troubleshoot it
tada it workssss
thanksss
No comment
Hi, Works also perfectly under Windows 2012, but not 2008, because beta does not install under 2008.
I have it up and running since october 2012. I had two server crashes since then, but I don’t believe they’re related to MSE.
i cant install…
it says “the customizable peremeters must be specifie to the install…..”
-_-
HI
Will you be releasing the new 4.2 MSE update for windows 8 x64 that has appeared on windows update as it does not install.
Kind Regards
abun880007
It’s done and working! – Update for Microsoft Security Essentials – KB2804527 (4.2.223.1)
Please check my website tomorrow!
[...] artykuł i liki do instalatorów: http://www.firstever.eu/ [...]
hi
I have installed but it gives me an error of validation check
plz help me out
regards
Faheem
I will not tell you how to pass validation check but check all comments – there is an answer…
i have been trying to download microsoft security essential on windows 8, its telling me download error
i have tried your method on evalution and activated pack of windowd 8 x32 pro and enterprise, but MSe says: YOUR WINDOWS DID NOT PASS GENUINE VALIDATION.