Windows 10: BSOD after upgrading 7/8/10 to Windows 10 V1607 => 0xc000021a

Discus and support BSOD after upgrading 7/8/10 to Windows 10 V1607 => 0xc000021a in Windows 10 BSOD Crashes and Debugging to solve the problem; I am upgrading some machines, most go without a hitch but some have a mysterious BSOD. I attached the dumps of a Windows 8 machine, i use MDT to... Discussion in 'Windows 10 BSOD Crashes and Debugging' started by stainomo, Nov 23, 2016.

  1. stainomo Win User

    BSOD after upgrading 7/8/10 to Windows 10 V1607 => 0xc000021a


    I am upgrading some machines, most go without a hitch but some have a mysterious BSOD.

    I attached the dumps of a Windows 8 machine, i use MDT to upgrade to Windows 10 v1607 + do windows updates. BSOD happens after the first real boot (which means upgrade + updates have been done)

    Attachment 111266

    Already tried swapping the disk in a very simular machine (same model, different bios) but the problem follows the disk.

    Anyone who can help me or point me in the right direction?

    EDIT: Something i forgot, these systems still boot in Safe mode! Tried cleanboot but no luck.

    :)
     
    stainomo, Nov 23, 2016
    #1

  2. Restore to factory created bsod

    Last night I followed directions to reset to factory settings before rehoming my computer. I am getting the BSOD with error 0xc000021A. I don't know what to do. Originally had windows 7 - upgraded to 10. Don't have disks.
     
    MadelineRichard, Nov 23, 2016
    #2
  3. WIN 10

    Is this the Feature Update to Version 1607, and after it installs it announces it is rolling back to old version?

    Check at Start>Settings>System>About if you have Version 1607. If not I would Upgrade to
    Windows 10 v1607 manually
    .

    Before running the Upgrade over itself, optimize the install following
    Overcoming Windows 10 Upgrade Failures.


    If this is another Update it's having problems with, try running the
    Windows Update Troubleshooter.


    If that doesn't help then everything else is here for
    Windows Updates fail to install in Windows 10 / 8 / 7
    ,

    As a last resort you can run the
    Windows Update Reset script for Windows 10
    .
     
    Greg Carmack - Windows MVP, Nov 23, 2016
    #3
  4. philc43 Win User

    BSOD after upgrading 7/8/10 to Windows 10 V1607 => 0xc000021a

    Hello and welcome to TenForums *Smile

    The error seems to be related to a problem with the session manager initialisation.

    Code: WINLOGON_FATAL_ERROR (c000021a) The Winlogon process terminated unexpectedly. Arguments: Arg1: ffffde8e0026d0b0, String that identifies the problem. Arg2: 00000000c0000022, Error Code. 2: kd> da ffffde8e0026d0b0 ffffde8e`0026d0b0 "Session Manager Initialization" [/quote] If you can boot into safe mode please try to run the system file checker and repair the system files. It might also be worth running a disk check with repair as well.

    https://www.tenforums.com/tutorials/2895-sfc-command-run-windows-10-a.html

    Drive Error Checking in Windows 10
     
    philc43, Nov 24, 2016
    #4
  5. stainomo Win User
    Thanks for the welcome! long time lurker, first time poster.

    Als did some Windbg work and found this but no clue what it means.

    Yesterday i started a sfc scan but it finished without repairing anything, this morning i started a complete scandiks. Just finished but it did not find any errors. PC still not booting like it should *Sad

    Just started the Rollback, i'd greatly appreciate it if anyone could help me *Smile
     
    stainomo, Nov 24, 2016
    #5
  6. philc43 Win User
    Are there any differences in the BIOS settings for the laptops and PC which end up not booting? I am thinking of things like legacy versus UEFI boot or possibly the way the disk mode is set (AHCI or IDE).
     
    philc43, Apr 5, 2018
    #6
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BSOD after upgrading 7/8/10 to Windows 10 V1607 => 0xc000021a

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