Windows 10 Error 0xc000021a

The 0xc000021a error stands for “STATUS_SYSTEM_PROCESS_TERMINATED” – mainly that means that Windows encountered an error so deep inside the system that it was unable to proceed operating.

It shows as a BSOD (Blue Screen of Death) if you flip in your system, and is mostly triggered if you improve a Windows 10 PC.

Blue Screens of Death are a well-known aspect of Windows (with many individuals citing the issue beginning with Windows 95) – inflicting the system to unexpectedly crash (and present a “blue” error display screen).

Whilst trivial for many individuals, the BSOD truly represents an issue deep inside the coronary heart of the Windows system.

Either some aspect of the software program stack, or its connection to the system’s {hardware}, has prompted an error so grave that Windows can not proceed working.

The commonest BSOD errors happen on account of driver points. This error is attributable to a botched Windows Update.


The essential causes of the error embody:

  • Windows Update did not full efficiently (however left information in your system)
  • The Update information put in in your PC didn’t utterly overwrite the previous ones
  • Your system could have blocked sure set up processes from finishing (antivirus and many others)

Typically, the next information will probably be at fault:

  • winlogon.exe – liable for logon/sign off protocols inside Windows 10. If it is broken in any manner, it’s going to trigger points such because the one you are experiencing
  • csrss.exe – utilized by Windows to handle graphical interactivity for the system. If that is broken, corrupted or old-fashioned, errors similar to you are experiencing will present

Because it is a BSOD (in any other case often called a “STOP” error), we might want to guarantee we are able to apply fixes outdoors the traditional working setting of Windows.

This could be achieved utilizing the steps beneath:


The approach to repair the error is to just be sure you have all of the “startup” information/settings repaired correctly…

1. Perform “Startup Repair”

The first step is to make sure you’re capable of run a “startup repair” on Windows 10.

Startup repairs are designed to offer a clear set of “boot” information – permitting for resolutions to the likes of points as you are experiencing…

  • If you can acquire entry to your system, you might want to restart it into “Startup Repair” mode
  • To do that, you might want to click on onto “Start” > “Power” button (left “charms” menu) + maintain SHIFT and press “Restart”
  • This will carry up the “Windows Recovery Environment” (blue display screen) which is able to present various choices with the system
  • Click on “Troubleshoot” > “Advanced Options” > “Startup Repair”
  • This will carry out the restore (will take a while) after which restart your system
  • If the issue persists, transfer onto step 2
  • If you can not acquire entry to your system (IE the error seems after boot), you might want to acquire entry to “Startup Repair” via the “forced boot” technique
  • Unlike earlier variations of Windows, W10 can not simply be rebooted into the “Recovery Environment” display screen – it needs to be triggered
  • The greatest manner to do that is boot up your system Three occasions (every time, it must fail)
  • On the fourth time, it ought to present the Recovery Environment (blue) display screen
  • From the choices that present, click on on “Troubleshoot” > “Advanced Options” > “Startup Repair”
  • Let the method happen after which it ought to restart your system

2. Resolve BCD, SFC and DISM points

If the above doesn’t work (which will not for 40% of circumstances), you may must resolve the varied points with lots of the core components of the Windows system.

To do that, you might want to acquire entry to CMD – which needs to be accomplished via the “Windows Recovery Environment” display screen we should always have seen in step 1…

  • If you may have entry to Windows, click on onto “Start” > “Power” > maintain “SHIFT” + click on “Restart”
  • If you do not have entry to Windows (IE the error exhibits at boot), you may need to boot up Three occasions – on the fourth, it ought to present the restoration setting display screen
  • This will carry up the blue “Windows Recovery Environment” display screen, from which you must click on “Troubleshoot” > “Advanced Options” > “Command Prompt”
  • This will load up the black CMD window which most individuals needs to be accustomed to

From right here, you may then need to sort the next instructions:

  • “sfc /scannow” + press “Enter”
  • “DISM /Online /Cleanup-Image /RestoreHealth” + press “Enter”
  • “bootrec /rebuildbcd” + press “Enter”

After doing this, restart.

If the error was with the boot information of Windows, you must see it repaired.

3. Perform “Repair” Install

Now, Windows 10 does not work in the identical manner as Windows 7/8.

Back the day, you used to have the ability to carry out a “Repair Install” – which meant that should you had any points along with your system, you’d mainly have the ability to maintain all of your information and many others – while Windows would completely refresh itself.

This has been changed in W10 with the “Reset Installation” characteristic.

Reset installations are tough to entry, however do offer you the flexibility to “flush” out any of the unhealthy updates out of your system – which ought to remedy the blue display screen error you are experiencing…

  • If you do not have a legitimate Windows 10 set up medium (DVD or USB), you might want to get hold of one
  • To do that, browse to your favorite search engine and search for “Windows 10 Media Creation Tool”
  • Click on the Microsoft hyperlink and obtain the device (it isn’t very huge)
  • After saving the device to your system, open it
  • Select “Create installation media for another PC”
  • Choose the suitable language and system structure (make sure that it is precisely the identical because the system you may have put in)
  • Follow the steps to create the media (USB strongly really helpful)
  • Restart your system and boot it from the USB
  • On the preliminary setup display screen, enter your language and different preferences, then choose Next
  • Select “Repair your Computer”
  • On the “Choose an Option” display screen, choose “Troubleshoot”
  • From the record that seems, click on on “Reset This PC”
  • Resetting your system retains your private information however usually removes functions and drivers you’ll have added to the system
  • Apart from the inconvenience of getting to refresh these information, you must get the system working once more with it

Obviously, this looks like loads – while you’ll have the ability to get the set up operating should you had entry to the system itself, should you do not – the above is the following greatest course of.

At this level – if the error persists, it means that you’ve got additional points which must be resolved (which may additionally point out {hardware} difficulties).

Whilst there are a variety of how to do that, the actual underlying subject is that it is seemingly you may have some particular subject along with your laptop or setup. To this finish, you may be higher speaking to somebody with precise expertise of your particular system, both from a direct hands-on method, or via the Internet.

You ought to search for somebody to assist on one of many assist communities (Microsoft Answers will probably be good for this), in addition to any additional points with the likes of native restore guys. Obviously, a restore man is probably going going to incur price.

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