Windows 10: BSOD, error 0xc000021a Solved

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  1.    01 Aug 2017 #1

    BSOD, error 0xc000021a

    Attachment 146603
    Attachment 146605
    Attachment 146609

    I have been struggling with error 0xc000021a for a while now and can not find a way to fix the issue. I tried using sfc /scannow, but all I get is a message saying:

    Windows Resource Protection found corrupt files but was unable to fix someof them. Details are included in the CBS.Log windir\Logs\CBS\CBS.log. Forexample C:\Windows\Logs\CBS\CBS.log. Note that logging is currently notsupported in offline servicing scenarios.

    the sfcdetails is attached.

    I also tried using dism /online /cleanup-image /restorehealth , but get Error: 3017 when at around 75% during the process.

    dism log file is attached as well

    I tried resetting my laptop, but get Error: There was a problem resetting your pc

    The only way I have found to get past error 0xc000021a is to disable driver signature enforcement, but this is only a temporary solution. Every time I restart or reboot my pc it will give me the error which is really annoying. I have went through the repair my computer scans many times and every time it will say that it couldn't repair the pc. The hardware scans never find any issues as well.
    Last edited by Le0198; 01 Aug 2017 at 11:01.
      My ComputerSystem Spec

  2.    01 Aug 2017 #2


    Before posting a BSOD thread, please read the instructions here: Blue Screen of Death (BSOD) Posting Instructions

    If you need to add new information, please make a new post in your initial BSOD thread. Please do not make an extra new thread.
      My ComputerSystem Spec

  3.    01 Aug 2017 #3

    Attachment 146677

    here is what I got from the think you sent
      My ComputerSystem Spec

  4. Posts : 19,974
    windows 10 professional version 1607 build 14393.969 64 bit
       01 Aug 2017 #4

    Rule 4
    No piracy or discussion of piracy allowed at all. Such as software, music, videos and other intellectual property violations (e.g. downloading youtube videos locally etc) - it is forum policy that no help shall be given to people who knowingly steal software or services.

    One of the main reasons for this is that the act of pirating the software will inevitably change the working of the software and make investigation and repair impossible. Please install a legitimate copy of the software and if you are still experiencing the issue we will be pleased to assist - No further assistance will be provided until we are satisfied that the software is genuine.

    All pirated software must be removed. You can remove all pirated software and resubmit a zip.
      My ComputerSystem Spec

  5.    01 Aug 2017 #5

    Ok, I do not know what I pirated. Can you tell me what I exactly pirated?
      My ComputerSystem Spec

  6.    02 Aug 2017 #6

    I dont see any pirated too. Theres just WinDivert1.2 (WinDivert64.sys) which is used by many tools which bypass software licensing activations.

    GitHub - basil00/Divert: WinDivert: Windows Packet Divert

    But in your case its related to Haste Esports Accelerator.

    I think there is no problem
      My ComputerSystem Spec

  7.    02 Aug 2017 #7

    All bsod dumps show 0xC000021A

    This bug check in most if not all cases is caused by a critical Windows component corruption (.dll, piece of the file system, etc), 3rd party driver causes a conflict (rare), etc.

    In every bsod dump smss.exe is shown as main process. Its piece og the file system (operating system):

    0xC000021A:    WINLOGON_FATAL_ERROR (1.08.2017 16:18:02) [Windows 10] 
    CAUSED BY:     ntoskrnl    
    PROCESS:       smss.exe 
    Usual causes:  User-mode device driver, system service, or third-party application, Mismatched system files

    There are also problems with Bluetooth (USB) and with the Killer network driver:

    2017-08-01 09:18:00  Warning: The driver \Driver\Qcamain10x64 failed to load for the device PCI\VEN_168C&DEV_003E&SUBSYS_15351A56&REV_32\4&3b0dd481&0&00E5. 
    2017-08-01 09:18:01  Warning: The driver \Driver\BTHUSB failed to load for the device USB\VID_0CF3&PID_E301\5&1208457f&0&5. 
    2017-08-01 09:28:00  Warning: Bluetooth HID device  either went out of range or became unresponsive.

    Qcamain10x64: PCI\VEN_168C&DEV_003E&SUBSYS_15351A56&REV_32
    -> Killer Wireless-n/a/ac 1535 Wireless Network Adapter

    -> Qualcomm Atheros QCA61x4 Bluetooth 4.0, Qualcomm Atheros QCA61x4 Bluetooth 4.1

    U are also not using the actual Windows 10 Build:
    Operating System: Windows 10 Home 64-bit (10.0, Build 14393) (14393.rs1_release_inmarket.161208-2252)

    There are three thing u should do now:

    1) Repair Windows file system

    1. Open an elevated command prompt.
    2. In the elevated command prompt, type these five commands below, and press Enter:

    dism /Online /NoRestart /Cleanup-Image /RestoreHealth
    dism /Online /NoRestart /Cleanup-Image /StartComponentCleanup
    sfc /scannow
    chkdsk C: /F /R /X
    fsutil dirty set C:

    The SFC command scans the integrity of all protected system files and replaces incorrect versions with correct Microsoft versions.
    If a Windows image becomes unserviceable, you can use the Deployment Imaging and Servicing Management (DISM) tool to update the files and correct the problem.
    For example, you would use DISM to fix Windows component store corruption when a sfc /scannow command is unable to repair corrupted or modified system files because the component store (source) is corrupted.
    Checking your drives for errors every once in a while can help fix some performance issues. Drive errors can usually be caused by bad sectors, improper shutdowns, bad software, corruption, physical damage, etc...

    2) Update to the newest Win 10 build
    Check for and Install Windows Update in Windows 10 Windows 10 Windows Update Activation Tutorials
    Update to Latest Version of Windows 10 using Update Assistant Windows 10 Installation Upgrade Tutorials
    How to get the Windows 10 Creators Update - Windows 10 Forums

    3) Check those drivers
      My ComputerSystem Spec

  8.    02 Aug 2017 #8

    1) dism /Online /NoRestart /Cleanup-Image /RestoreHealth --- got an error
    dism /Online /NoRestart /Cleanup-Image /StartComponentCleanup --- it got to 100% an then said there was an error
    sfc /scannow --- like earlier, it said it couldn't solve all issues
    chkdsk C: /F /R /X --- it did the process, but didn't solve the problem
    fsutil dirty set C: --- same as chkdsk

    2) "You are also not using the actual Windows 10 Build:" Did'nt understand this too well but I check the updates and it updated and it didn't solved the issue.

    3) I checked and updated the drivers, but it didn't solve anything. Is there anything else I should do with the drivers?

    I'm not too good with all this so I may have done something wrong. If you have any more suggestions, please send them. Thanks for your help so far though!
      My ComputerSystem Spec

  9.    03 Aug 2017 #9


    1) I think the DISM and sfc commands didnt run properly, because the windows file system is broken. At this point the only way is to repair or reinstall Windows 10.

    U can repair Windows with an InPlace Upgrade (please follow those tutorials):
    Repair Install Windows 10 with an In-place Upgrade Windows 10 Installation Upgrade Tutorials
    Repair Install InPlace Upgrade Windows 10 - YouTube


    Clean Install:
    Clean Install Windows 10 Windows 10 Installation Upgrade Tutorials
    Last edited by BSODHunter; 03 Aug 2017 at 03:46.
      My ComputerSystem Spec

  10.    03 Aug 2017 #10

    Ok, I'm trying to install/update windows using the media creation tool and I get an error saying setup couldn't start properly, I looked up online first to see how to solve the issue. I read that deleting $Windows.~BT and $Windows.~WS would solve it. So I was able to delete the ~WS one but not the ~BT one since it said I didn't have permission too. I tried taking ownership of the file and using the disk cleaner but those didn't work. The disk cleaner did delete some things, but didn't delete the folder entirely. Now, when I try to delete the folder, it says the folder is open in another program. I tried rebooting and booting into safe mode and those did not solve the issue
      My ComputerSystem Spec

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