How to fix: Apple Application Support was not found


I installed iTunes a couple days ago, and the first error I got was this.

Apple Application Support was not found.

Apple Application Support is required to run iTunes. Please uninstall iTunes, then install iTunes again.

Error 2 (Windows error 2).

In case you have this problem, the error is pretty simple to solve. First, you need to have WinRAR on your PC. Then, right click on the iTunes installer, Open with WinRAR.



Once in there, right click on AppleApplicationSupport.msi > Extract without confirmation. This will extract the file in the same folder the installer is located.


Just run that file as administrator and you’re good to go.

NOTE: You need to have the Windows Modules Installer enabled (TrustedInstaller) or it won’t work.

Author Info:

A 20 year old computer engineer... Here's a clear explanation =>
October 15, 2011 | Autor: TatoSgr | Curiosities
Etiquetas: , , , ,


  1. juanma says:

    Wow, It works!
    Thaaaaank you, quite easy and clear!
    You are great man.

  2. Pee says:

    Unbelievable, you are a genius!!!!
    Thank you, it was just like that unlike others.

    I like you so much, keep it up the simple easy way!!!

  3. Jaya says:

    I do have WinRar, but when I right click itunes installer I do not get this option for “open with WinRar” Please Help!

  4. Flávia says:

    I’m experiencing this error, did everything I ordered, but the following error appears: Error during installation of the assembly See Help and Support for more information. HRESULT: 0×80070424. I click OK and does not install.

    Can you help me?

  5. Jaime Guzman says:


  6. Mir Inayath Ali says:

    This is an awesome solution . Thank you so much :-)

  7. bum says:

    Hi i’m trying to run this on a PC that i do not have admin for haha. I tried extracting the apple application support folder and emptying the contents into the itunes folder but it didn’t work. My question is…where can i put the apple application folder WITHOUT ADMIN that the itunes exe will find it?

  8. Daniel says:

    Thank you!!

    I was dreading the thought of uninstalling and re-installing the Apple products suite. I didn’t want to lose all of my iTunes playlists, song play counts, and other information. Thanks for saving me from that!

  9. Malik Velasquez says:

    ok if you right click it and it doesnt work then go to the winrar folder and drag the itunes.exe over winrar and see if it works that way

  10. emanuele says:

    I do what you suggested but still doesn’t work.
    I’m not sure TrustedInstaller is running… it is actually not in my processes… How could I make it run?
    Many thanks!

  11. Stephen Butler says:

    It was this page, of all the pages I tried, including Apple, Microsoft and all their various forums, that fixed the issue that I was having installing iTunes on Windows Vista. How? I urge you to read the VERY LAST LINE, the part that says you need to have Windows Modules Installer enabled. Make sure you have done this! This is the key part of the whole thing. Many thanks for this.
    Stephen Butler

  12. Pedro says:

    1,5 yrs into it – and it still works!

  13. J Forr says:

    Brilliant. I would’ve never figured this out. Thanks so much!

  14. QaySyrah says:

    You’re fix at least got me on the path to a fix: right-clicking on the itunes exe file didn’t get me an “open with winrar” option. So all I did was open the winrar program and open/extract the itunes exe through it from the downloads folder. I used this version of winrar:
    Itunes downloaded properly and works!
    It wasn’t necessary to do anything related to AppleApplicationSupport.msi.
    Thanks for the assist!

  15. Rob says:

    It worked! Thank you very much. You shall go to a heaven of your choice.

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