Install Microsoft Security Essentials Without Genuine Validation Check

March 18, 2010 | Filed under Windows


Microsoft Security Essentials is the free antivirus developed and provided by Microsoft for free to Windows XP, Vista and 7 users. It has been very good detection against virus and it is light which does not put a lot of load on your computer. However to install Microsoft Security Essentials, the user must go through the genuine validation check first. If the genuine validation passes, the installation continues but if failed, the user cannot proceed with the installation showing the message “This copy of Windows did not pass genuine validation. You might be a victim of software counterfeiting” and will be either asked to close the setup or get a genuine Windows.

Unable to install Microsoft Security Essentials

If you do not have Windows Genuine Advantage (WGA) installed because you want privacy and does not trust what information is being constantly sent to Microsoft, then here is a method on how to install Microsoft Security Essentials bypassing the genuine validation check.

1. Download Microsoft Security Essentials.

2. Right click on mssefullinstall-x86fre-en-us-xp.exe, go to 7-Zip and click Extract to “mssefullinstall-x86fre-en-us-xp.exe\”

extract microsoft security essentials

3. Download MSSE Genuine Check Bypass Loader, extract and copy the loader.exe file to the mssefullinstall-x86fre-en-us-xp.exe folder.

4. Run loader.exe and Microsoft Security Essentials setup will launch. Follow the on-screen instructions and when asked validate your Windows, just continue with it. Within a few seconds you will get a message “This copy of Windows passed genuine validation”.

You can now update and use Microsoft Security Essentials as normal. However you will notice that there are some red alert notifications in the program telling you that Windows did not pass genuine validation and you can run another validation check after you get genuine Windows.

microsoft security esssentials get genuine

This annoying message can be removed by following the steps below.

1. Press WIN+R, type %WINDIR%\system32\drivers\etc and click OK.
2. Open hosts file with a text editor, add the following entries to the file and save it.

3. Press WIN+R, type "%ALLUSERSPROFILE%\Application Data\Windows Genuine Advantage\Data" (with quotes) and click OK. Delete the data.dat file in the data folder.

The method above only works on Windows XP. We have tried it on Windows 7 and got the error message “Unable to change access to memory region!” when trying to run the loader.exe. Unfortunately every running loader.exe with Windows XP SP3 compatibility mode also won’t work.


138 Responses to “Install Microsoft Security Essentials Without Genuine Validation Check”
  1. twi says:

    There’s another method. Install an older version of msse from here: and update it.

  2. Muhaha says:

    Oh! Where are you? I’ll kiss you.

  3. Raj says:

    Hey Guys the first loader file run the installation wizard but get stuck on validation and task manager shows Not responding …

    Something else do you have to share with ? its xp sp2

  4. RB says:

    Awesome article, worked like a charm, thanks very much!!

  5. Mn says:

    The ONLY thing i found that actually works …Thanks guys!

  6. eLeMe says:

    Works very well! Thank you!

  7. woody says:

    mcafee did not autoupdate anymore, after some searching I landed here. Now I’m a ms-se user just like on my 3 other (regular) machines. Thank you!

  8. emjeytiar says:

    It worked!! I’ve searched for something like this patch after my old copy of ms-se stopped updating. Thanks!!!

  9. mustong says:

    Not working..after rebooting,it still say that my pc didnt paa the genuine check just like pic above. Is sth wrong anywhere?

  10. worked for me lyk… wowww!!!!!!!!…. tnkx man!!!…. tnkx for da gr8 help!…. hope to get free of that f**king “ZIP” named icon virus….(don’t know whats that virus called!)…. itz making a hell out here!!! on my PC!!!!

    tnkx tnkx tnkx man!!!
    Hats OFF!!!

  11. leaw says:

    I installed it

    but the problem is that the message
    “windows did not pass genuine validation.”
    just like in the 3rd pic won’t disappear
    WHY !!!!!!!!

  12. GSqrd says:

    hey, thanks for this! Just when I thought I won’t be able to install this. ๐Ÿ˜€
    Yeah, it’s a good anti-virus. But it slowed down my PC a lot though. I dunno, perhaps I really just have a slow pc because of all the files. lol

  13. Nika says:

    Works fine! Thanks a lot

  14. Uncle B says:

    They found out and give me 30days from today, it was running fine since early April 2010. Help !

  15. kakadiya says:

    thanks a lot dude!!!!!

  16. sujatha says:

    Thanks dude its working…

  17. chaithanya says:

    thanks a lot…
    its working gr8

  18. akocedu says:

    hi twi,
    does the old version of msse has no wga validation process?


  19. Vinit Siriya says:

    this programe really works.
    I am very much happy because i am trying to install it from 3 months.
    My school teacher will award me 500Rs

  20. Alex says:

    I Believe M$ has put some new servers to check and it is saying again about conterfeit bla bla bla… Someone has a workaround?

  21. Mann says:

    it’s working Man Thankx very very Keep it up

  22. sith says:

    It says “Creating process…[FAIL]”

    What’s wrong?
    I’m using Windows 7 Ultimate x64

  23. cherikee says:

    What is 7-Zip? Never heard of it. Google time……

  24. Rahul sharma says:

    Awesome guys!!!!
    m Very grateful to you
    Really Hats Off To u Guys

  25. PAU says:

    I have XP and had trouble the first time cause it kept telling me it wouldn’t pass the validation test (even with the loader running). I ended up following the 1-3 steps in “This annoying message can be removed by following the steps below.” and it worked!


  26. NEspter says:

    Thanks for the tip, useful.

  27. bonzo says:

    Works brilliant thanks

  28. Anas says:

    i did everything as stated but after i rebooted its back what to do??( i use XP)

  29. it was Awesome man thing soon we will get windows 7 in this way woh oooooooooooooooooooooooooooooooooooooohhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh its working good yo yo yo hands off man u such a briliant brain

  30. leihzahnrad says:

    Does not work for me in German Version 1.0 Final ๐Ÿ™

  31. Saqib says:

    it works… love u.. muaaah…\

  32. Rawkon says:


    I use XP pro(sp3) 32 bit.
    And I just downloaded the newest version from MS site and then try that loader. It can break the validation step but after that the installation freezes and do nothing.

    What do you think about this problem guys?

  33. anup says:

    cannot find the setup for MSSE Genuine Check Bypass Loader can any one help me

  34. mubASir says:

    its great but that annoying get genuine is still there tell me how to remove it

    i’hv don add script to host file and deleted data file from
    ALLUSERSPROFILE%\Application Data\Windows Genuine Advantage\Data

    but every time i run validate check to get rid of that annoying option data file re appears on the location all users dat…

    tell me how to get rid of tht option [get validate]

  35. Rawkon says:

    any suggestion?

  36. fossil says:

    thanks works great

  37. Maurizio says:

    It works! Tnx

  38. mariana says:

    It works man, Thanx allot ๐Ÿ˜‰

  39. wewa says:

    worked for me also using winrar instead of 7zip and with mse version 1.0.1963.
    I wish microsoft would stop with this annoying messages that only hurt legitimate customers. dumb.

    thank you for this fix.

  40. Monte says:

    Anyone made it work with XP SP3 ???
    The loader starts, then it starts MSE install, then just freezes and get stuck on validation ( – Put breakpoint on check at 018AE559h…[OK]).
    Yes, I have SP3… Is that why it does not work ?

  41. Aashit says:

    it’s ossom…………….
    that’s really work

  42. Neltari says:

    “It says โ€œCreating processโ€ฆ[FAIL]โ€

    Whatโ€™s wrong?
    Iโ€™m using Windows 7 Ultimate x64”

    I got that too, Windows 7 Enterprise x64 here.

  43. NoDo says:

    you can try this when cutting off your connection to the net
    these are the updates of MSSE for PCs without internet connection
    i think you can disable it (connection) then install these updates then reconnect again
    i think this will trick the validation
    it worked for me ๐Ÿ˜€

  44. NoDo says:

    and don’t forget to disable scheduled updating from the settings
    do it manual better to keep it on ๐Ÿ˜€

  45. Shoghi says:

    This doesn’t work on Windows 7. I keep getting a FAIL while “Creating process…”.

  46. usman says:

    thanks man

  47. More info says:

    This seems to only work on 32bit windows. Do you have a 64bit version of this software?

    It keeps saying creating process….[Fail]
    My best guess is that it is 32bit only.

    Any thoughts on this?

  48. Orb says:

    Does not work on Windows 7 64bit FAIL while “Creating process…”

  49. ahmad says:

    i can instal but when i download the update, it always says Microsoft security essentials wasn’t able to complate the Virus & spyware definitions Update on….
    please make sure your computer is connected to internet & try again..
    what should i do…?

  50. afzal says:

    i have installed mse using above method, it is working fine,but from past few days, it keep bugging me to upgrade(not update,i mean “upgrade”) it, it says microsoft security essential has a new version so you should upgrade, i am ignoring it, so what should i do, should i upgrade or keep ignoring it

  51. Quad says:

    Thank-yoU! Your th best

  52. Harrish says:

    Hey You Rockszzzz…

  53. Blah says:

    First comment nailed it. Uninstall any version you already have. Download the old version in the link, install it it, update, perfect copy. ๐Ÿ™‚

  54. Aniket Waknis says:

    its a wonderful tip.. thanks a lot

  55. lee says:

    where can I find MSSE Genuine Check Bypass Loader????

  56. Stitched says:

    In order to get the latest one to work:

    Follow instructions #1-3 below the main install instructions above (clearing files, changing hosts file, etc).

    Download the MSE installer (as directed) and use 7Zip to unpack it into a folder
    Download the validator archive, unpack it, and copy the loader.exe into the MSE unpacked folder (mseinstall/x86)
    Run the loader.exe (dos window pops up, goes through its thing but doesn’t launch installer)
    Click on setup.exe (in this folder) and it goes through the install process

    This should install the program. It worked for me (Windows XP 32 SP3)

  57. Ter says:

    I placed the loader.exe file into unzipped folder and after running(with both:admin rights and regular rights) the CMD screen says press any key to continue,I press a key and it says ok but next string it says FAIL…could not create a process or “EXE not found in directory” .Does anyone know how to fix this?Thanks.

  58. nexus says:

    its not worked on my pc too.. ๐Ÿ™

  59. str7der says:

    For the people that have problems, this won’t work with security essentials v2, try to find version 1…

  60. dave says:

    thanks, you rock!

  61. Puujee says:

    Wow Awesome that is worked that error is removed thanks zhacks

  62. Monte says:

    Sorry Stitched,

    still does not work for me with MSE V.2 on XP SP3.
    Neither it did with V.1…
    With V.2, MSE reports that my copy of XP did not pass genuine validation and with V.1, the loader starts MSE install, then just freezes and get stuck…

    Any suggestions ?

  63. vikas says:


  64. Broken {V} Heart says:

    Heyy, Dude !

    It works as like as I have Genuine Windows.

  65. Dagwood says:

    Works with V.1, but after install, reports that my Windows XP Pro SP3 is not valid and that MSE will be disabled after 30 days. Any fixes?

  66. Dewa says:

    its not work on Win XP Sp2

  67. ambkeys says:

    Works great on Windows XP!

  68. king8o says:

    What’re these lines for in the host file?

    My anti-spyware blocked these changes and I think it is doing the right thing.

  69. Joey P says:

    Any news on a Win7 crack? I have a genuine windows PC, but disabled all the WGA stuff ’cause Microsuck has no business putting spyware on my machine.

  70. Eihsz says:

    it works.Thanks…It shows that new version is available. can i up-great it?…suggest me.

  71. anso says:

    can you help me it says cannot find exe

  72. Oogoo says:

    Yes ! Working working thanks a lot ! ๐Ÿ˜‰

  73. nik says:


  74. couchPOTATO says:

    For those who get an “EXE not found in directoryโ€ message, it’s a matter of placing the “loader.exe” file in the correct folder (the folder containing “setup.exe”, not “setup.ini”).

    The new MSE installer is named “mseinstall.exe”
    Once unzipped look for the folder “x86”.
    Place the “loader.exe” file in this folder, run it, launch “setup.exe” (which is also in this folder), and you’re good to go!

  75. Eshan says:

    Fuckin awsum… but i tried it thru diffrnt way then only it worked, earler when i was tring to run the dos file, it was giving me error(exe missing blah blah blah…the step u wrote did nt help me, so i used my own step…. i first install save the host file, deleted the data file… then extracted the file, run the mse from the under the 32 bit folder… and it worked….
    neways thanx man… u rock

  76. Nasri619 says:

    someone help me please!!!i got be detected as victim microsoft when i download this software….help me please,i cant do anything now…send me a message…

  77. Mysala says:

    As stated above, you might need to get v1 from

    Extract the exe to a folder and put the loader file in it and run that.

    The loader doesn’t work with newer versions, it just hangs after a few seconds.

  78. Pradema says:

    Ur gr8. wooooooooooooooooooooooo !!!!!!!!!!! it is still working. thnk lot. Big boss. b4 i try another many tricks but not success. thnks again.

  79. Dave says:

    Stopped working following the latest windows update from MS. Anyone else suffering similar problems??

  80. Nascar says:

    WOW! It’s awesome. It’s worked THANX Million times

  81. Prabhu says:

    Download MSSE Genuine Check Bypass Loader, extract and copy the loader.exe file to the mssefullinstall-x86fre-en-us-xp.exe folder This file is having virus on both the exe files

  82. StingerMan says:

    Does not work says your computer does not pass Genuine check. Oh Well…

  83. Ricky says:

    It works great, big thanks. Got rid of that AVG bloat ware now.

  84. ulycuera says:

    worked great! thanks a lot guys….

  85. JC Ramos says:

    worked for my windows xp 32 bit xp3..mse v2.1

  86. Dhruv says:

    Can I upgrade it? Will the bypass work for the newer version or will it stop working ? PLease reply.

  87. Prasad says:

    great man!!!!!! thanks a lot………..

  88. Olumide says:

    Thanks a load man… you’re the best

  89. Nahian says:

    i can’t believe. It’s working….

  90. Steve says:

    Hey this worked great the first time I used it !

    However, I did a complete reinstall of Win XP – same everything, same PC, same XP copy, etc. It failed the second time. It gave a “could not find exe file” error. I noticed Microsoft changed the name of the download from “mssefullinstall-x86fre-en-us-xp.exe” to “mseinstall”.

  91. MinThuKyaw says:

    แ‚Šแ€ทThank you very much .

  92. Simarjot singh says:

    thanks ,This method is great .

  93. Valeria D. Watson says:

    Any luck with MSE 2.1.1116?

  94. Mine just freezes after the 4 green “Ok ,Ok, System, OK” in command prompt. Any ideas Admin? Thanks for your time!

  95. Thank you v m ๐Ÿ™‚ i use this a long time ag,and it’s very practical.. THANKS FROME MACEDONIA

  96. jimmy says:


  97. Abdullah khalil says:

    thanks it is working

  98. Vishva says:

    It worked thanx man.first it said it needed a genuine win xp but now it says protected……………….. thanx a million.(win xp-sp2)

  99. Folken says:

    In Windows 7 when run “MSSE Genuine Check Bypass Loader” with admin priv’s of course, and you see the โ€œUnable to change access to memory region!โ€ message, close the window and then run the RemoveWAT app (the link is above in the comments).

    Reboot, run the “Loader”, the message error will appear us again, don’t care, run the setup.exe of MSE and now we will install normally, reboot again and the soft works with the update of virus and spyware definitions.

    Sorry my bad english. ๐Ÿ™‚

  100. Vishva says:

    u can get older versions from “”.

  101. xui says:

    Xuinya!! Poshol ty na xui!

  102. RAWSTUN says:

    DISCONNECT FROM THE INTERWEBS! I use a reg edit file (add licence to your windows) then double click the original downloaded file.

  103. great thanks :) says:

    Awesome! worked like a charm, to those of you who it didn’t work for do what Stitched says: (and make sure you follow the entirety of the steps even after the validation says it hasnt passed!!! “In order to get the latest one to work:

    Follow instructions #1-3 below the main install instructions above (clearing files, changing hosts file, etc).

    Download the MSE installer (as directed) and use 7Zip to unpack it into a folder
    Download the validator archive, unpack it, and copy the loader.exe into the MSE unpacked folder (mseinstall/x86)
    Run the loader.exe (dos window pops up, goes through its thing but doesnโ€™t launch installer)
    Click on setup.exe (in this folder) and it goes through the install process

    This should install the program. It worked for me (Windows XP 32 SP3)”

  104. polaco says:

    using this tip, you get validate during the installation too!!!!!

  105. Krasniqi says:

    thankyou this is working great thanks ๐Ÿ˜€

  106. Wynand says:

    Awesome – Thx

  107. vipin says:

    is that gud to remove dat file and that edititngs in host?

  108. this is funny says:

    well,i was shock when i check about the production key…actually i was confused between ‘Genuine’ and the Product key . i saw the 30 days and will be expired.Now i get it,but still have a bit worry . BTW, (^(OO)^) i was actually trying on doing it(the Microsoft Security Essentials ) but ,while i was downloading, I SAW the word there say only work on Window XP ,I was kind of shock ,well a bit dissapointed…. I still don really understand about “Window” stuff but still hope nothing goes wrong (#(OO)#)

  109. Luka says:

    It works only for WIN XP. Windows 7 does NOT have data.dat file… There was one way, one file was supposed to delete but i can not remeber…

  110. jeelan aysha says:

    really great, am so happy , its 100% work guys,

  111. p mishra says:

    its gr8

  112. p mishra says:

    itz gr8.
    only thing that is worrying me that “computer status-potentially unprotected” is displayed even after following all the steps mentioned above including deleting data.dat file (para 3). any comments? thanks friend.

  113. bapi mishra says:

    thanks boss. worked fine. but that annoying msg of did not pass validation continues. the next problem is the intermittent popping up of msg “msse will be disabled after 30 days” and keeps reducing day by day. tried to sort it out with RunAsdate, but to no avail. any clue?

  114. Kabir says:

    It works..
    with Microsoft Windows XP
    Version 2002
    Service Pack 2
    But, there is a option of Upgrade Now.
    Should I go for it?

  115. M.Minhaj says:

    really this is very excellent antivirus.

  116. Gibson Kepao says:

    i like microsoft security essentials it so powerful unlike avast ,avira, and etc

  117. sam says:

    BRAVO!!!!!!!!Works Great!!!!!Cheers!!!!!!!

  118. sreejith says:

    works for me….awesome stuff man…ty a lot !!

  119. Ajith says:

    Awesome! Awesome! Awesome! Awesome! Awesome! Awesome! Awesome! Awesome! Awesome! Awesome! Awesome! Awesome! Awesome! Awesome! Awesome! Awesome! Thank U

  120. prince_of_egypt says:

    It worked like a charm. Thanks man.

  121. Maverick says:

    Hello there. That’s a great tip you’ve given BUT I’m using “windows 7 ultimate 64bit” and this tip is not working. The command prompt pops up and says ” unable to find exe! File not in directory!” What should I do? Any help will be very much appreciated. Thank you. ๐Ÿ™‚

  122. lalit says:

    a 1000 times thanks…………………………………………………………………………..

  123. Sid says:

    Thanks a ton. Great article. Everything is possible.

  124. shane says:

    also did not work for me till i downloaded version 1 on filehippo and changed hosts file as in comments above, thanks bro!!!!

  125. A. Baloch says:

    100% working. tnx.

  126. iqb says:

    Thanks. It worked on my windows XP

    a tip for you guys, if it doesn’t work, then restart your computer and try again. That is what happened with me.

  127. ajax says:

    mama eh ya, bamboleo! good one on mse check!

  128. luke says:

    Awesome – works perfectly.

  129. Priyansh mody says:


  130. viny says:

    thanks man, its working absolutely fine!!!

  131. Santosh says:

    hi friend thank you very much
    i love u

  132. Charly Kayo says:

    when start loader go to
    Patching-debugs check
    and nothing.
    sits on this line and do nothing more.
    tell me what to do

  133. cpat says:

    hi there..
    Its work for me, should i upgrade or keep ignoring it

  134. Lance says:

    great !! nice work . . . . good thing that people like you exist ๐Ÿ˜€

  135. xjapanboy says:

    Awesome! i just done do that, and now my MSE have no validation chek anymore! ๐Ÿ˜€
    thanks a lot bro. I have to share this site to another!

  136. mse says:

    it’s december 25, 2012. and it’s still 100% works. “Merry Christmas Everybody”.
    Thank you

  137. bla says:

    Cool. Still works on XP SP3!

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