0xC000021A error code

Discussion in 'Windows 8' started by thals1992, Nov 3, 2011.

  1. thals1992

    thals1992 MDL Novice

    May 28, 2011
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    OK, so I've had Windows 8 installed on my 500GB Western Digital USB 3.0 Hard Drive for a month and a half, ran it on multiple different machines, (Two of my laptops; a HP Pavilion dv5000 and a Gateway NV52; my university's HP Compaq 6000 Pro AIO machines (3 of them so far); and my friend's Acer Aspire one) and its worked great until this afternoon. I see it start up to the Win8 Boot screen and then i get the new blue screen with the error code "0xC000021A". I have also tried to get the Options menu to display on on the win8 boot loader and even then i still get the error message. I've only seen this on the AIO machines, I have yet to attempt to try it on my laptops. I guess I can't really provide any more info, except that it was fully updated, had office 2010 installed on it, and it also had connectify installed.
     
  2. thals1992

    thals1992 MDL Novice

    May 28, 2011
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    So I guess when I first started to ask, about the error, I guess I was wondering if there's any way I can I repair it even though I can't boot to windows or even the new options menu.
     
  3. Nawzil

    Nawzil MDL Guru

    Jun 18, 2011
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    Can you boot in safe mode with command prompt?
     
  4. thals1992

    thals1992 MDL Novice

    May 28, 2011
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    I can mash F8 when it starts to boot and it still gets that error within the NextBoot screen. The only things I can do have to be on a outside-in method...
     
  5. Nawzil

    Nawzil MDL Guru

    Jun 18, 2011
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    Then you better reinstall WDP. That is the only solution available for you.
     
  6. aron.hugos

    aron.hugos MDL Novice

    Oct 16, 2012
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    #7 aron.hugos, Nov 28, 2012
    Last edited: Nov 28, 2012
    Hi, the error was always caused by failed Winlogon.exe or Csrss.exe, to fix the error, visit Regmender.com for more solutions.


    Good Luck!
    Aron