0xC0000225 Error trying to install Windows 2008 R2 (Or other x64 Windows)

As I was attempting to play with Windows 2008 R2, which only comes in 64bit flavors, I received this error when trying to start the setup:

nothing useful nothing useful nothing useful 0xC0000225 blah blah blah blah blah

This was on the latest version of VirtualBox, on a 32bit host. At first I thought it was a bug in VirtualBox, since it didn’t support 64bit guests on 32bit hosts for so long, but it turns out that when I enabled IO APIC for that Virtual machine, everything worked fine !

Happy testing.

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72 Responses to 0xC0000225 Error trying to install Windows 2008 R2 (Or other x64 Windows)

  1. Alsan Wong says:

    Get the exact problem with the released version, thanks for the tip 🙂

  2. Ian says:

    Worked. Thanks.

  3. apophis says:

    thank’s working at first attemp.


  4. Vetri says:

    Thanks much for the tip! Worked well for me.

  5. Jason says:

    Thanks for that. Working now 🙂

  6. Mike Hain says:

    I was about to give up. Thanks a ton!

  7. Julian Dunn says:

    Thanks for this tip! I’m used to Microsoft’s error messages being totally unhelpful and having to go to Google for the answer 🙁

  8. Random Bran says:

    Worked for me too, thank you 🙂

  9. Re says:

    Tnx alot m8, that fixed the “problem” tried for days now 😛

  10. mathew says:

    Was about to call it a day.. thanks pal, you saved me!

  11. Bjaanes says:

    Worked for Windows 7 (x64) on Virtualbox under Linux (Kubuntu 10.04)! Thx!

  12. Heitor says:

    Worked for Windows 7 Ultimate 64 bits host and Windows 7 Home Premium 64 guest. Thanks a lot man!!!!!!!

  13. JDPalmer says:

    Awesome, wondering what was going on. 64bit host with 64bit OS, was thinking it was going to be impossible. cheers for blogging the tip!

  14. DHernandez says:

    Worked for Windows Server 2008 R2 guest on Windows 7 x64 host!! Thank you!!

  15. Thanks a lot bruz, i love ya 😛
    Was about to give up as well, but now everything works sweet 🙂

  16. alex says:

    Thanks a lot!!!

  17. Sidda says:

    Thanks a lot. This was very helpful.

  18. mp says:

    Thanks a lot. This was very helpful.

  19. manvehe says:

    Thaks for the tip.

  20. Sean says:

    Ran into the exact same problem in virtualbox 4. Thanks a lot for the tip. Really appreciate it!

  21. Scott says:

    I’ll second Sean – this fixed the error immediately on VirtualBox 4 with Win 7 Ultimate x64.

  22. Pingback: Portal Tecnologia » Blog Archive » 0xC0000225 Error trying to install Windows 2008 R2

  23. Joe says:

    I just slipstreamed SP1 and thought something was corrupted or went wrong. Thank you. Your advice resolved my issue, which was that same as you mentioned.

  24. Proger says:


  25. No funka says:

    Ya funko!!!! 🙂
    Virtual Box
    Maquina Virtual
    Configuracion -> Sistema -> Habilitar IOAPIC

    *Favor de omitir el comentario anterior.

  26. patch says:

    thanks so much!

  27. Mr CASH says:

    Thanks 🙂 worked like a charm…

  28. Gabriel Ubu says:

    Awesome tip!! it can be so easy

  29. René Pieters says:

    Thanks. Turns out this applies to Windows 7 as well.

  30. David C says:

    Cheers – attempting an SBS 2011 install on a VM hosted on Linux Mint 64-bit.

    Working for me.

  31. Kostas says:

    Thanks mate,

    I can confirm this working on windows 7 x64.

  32. Tony says:

    Thanks. It worked for me with Windows 7 x64.

  33. Ronnie says:

    Was having trouble installing SBS 2011 Essentials on a Mac version of VB, this fixed it right up. Thanks man!

  34. Masahiko says:

    Great tip. It helped me a lot. Thanks!

  35. tipodeincognito says:

    awesome! Thanks man! It works perfectly!

  36. Jack says:

    hi, it works, thanks a lot.

  37. Bastiaan says:

    Hi, works great. Thanks alot!

  38. Paul Choi says:

    It’s work! thanks a lot !

  39. Alice says:

    Thank you, Guillaume!

  40. John Spencer says:

    Thanks very much for the solution. Just letting you know that even an ‘old’ post from 2009 has remained a valuable contribution!!

    Now I can ‘tinker’ with Powershell using the new OS.. [ha!]

  41. Ben says:

    Thanks so much! Worked great!

  42. JeKo says:

    Tnx a lot… I just turned on the IO APIC ad all, finally, worked! 🙂

  43. LH from New Jersey says:

    Yep that did it…thanks!

  44. Works fine! Thank you! 🙂

  45. David says:

    Works fine on Windows 7 x64 host.

    Thanx a lot!!!!!!

  46. Billy says:

    Am currently installing windows 8 dev on virtual box and you saved me !!! Thanks !!!

  47. Chris says:

    Worked for me thanks about to give up on virtual box my self

  48. siva says:

    Worked for me like a wonder.

  49. Almir Ribeiro says:

    Great! Work Fine! Thx! 🙂

  50. Muchas gracias. Muy útil.

  51. Mars needs Women says:


  52. Jason says:

    Worked for me thanks!

  53. Sam says:

    What a brilliant ‘simple’ fix. Worked great for my W7 Ultimate/enterprise installs

  54. Laurentiu says:

    yep. did the trick. thanks.

  55. Djneoh says:

    Muchas Gracias!!! TODO PERFECTO!

  56. Yohan says:

    Thanks, it works.
    Gracias, funciona perfecto.

  57. Jon Wood says:

    Thanks, did the trick first time!

  58. Michael Ovesen says:

    Thank you. Found your note and then installation running fine.

  59. Tom Colvin says:

    Thank you! Works perfectly 🙂

  60. galegopc says:

    Saved me a lot of time! Quick answer, back to work! Thanks a lot!!!

  61. Gionei says:

    Thanks a lot!

  62. David says:

    Perfect fix, thanks

  63. Jason says:


  64. Mikael Svensson says:

    Saved my day, M8. Tnx!!!

  65. J says:

    thank you!

  66. Chicoh says:

    Works fine for me at Windows 2008 server install
    ation. Thanks!!!

  67. Rbw says:


  68. Catscratch says:

    Worked for me too! Thanks m8!

  69. Pingback: How To Fix 0xc0000225 Server 2008 R2 Errors - Windows Vista, Windows 7 & 8

  70. Tony T says:

    Awesome, worked like a charm. Never would have thought of that without this article.

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