Windows 10: How to solve BSOD 0xc000021?

Could it have something to do with the recent update?

submitted by /u/Gigamore412
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:)

 

[SOLVED] Multiple random BSODs, all pointing to the kernel


No BSODs yet but I haven't been playing World of Warcraft which I suspect to be a possible cause.

Was the driver verifier step necessary or just a suggestion?

 

Random BSOD while browsing internet


BitDefender is nothing special. mwac.sys causes BSODs anywhere.
A tiny documentation can be found here: Solved Random BSODs - Windows 10 Forums
In that very thread, the suggested action apparently worked.

The storage and network filters of any third party antivirus can cause BSODs. Neither MBAM nor BitDefender is any special. For a regular antivirus, it may be shifted to an alternative; but MBAM has no alternative. So a clean install of the said program is the most feasible first step.
As far as the first step is not failing, it is better to not think for the second step. Because the BSODs are not universal, failure at the first step is not universal; and success at the second step is also not universal.
That is why I posted that my suggestion may work, or may not. Let us see where it goes.

 

0xc000021 Code Automatic repair loop

Hi,

Thank you for posting on Microsoft Community. I understand the inconvenience you are facing. I am glad to assist you.
We appreciate your effort and time to try and get the issue resolved.

The 0xc000021 error may be caused by windows system files damage. The corrupted system files entries can be a real threat to the well being of your computer.

There can be many events which may have resulted in the system files errors. An incomplete installation, an incomplete uninstall, improper deletion of applications or hardware

I suggest you to refer to the section 0xc000021a
and the resolution given for this error by Andre Da Costa (MVP) and check if it helps:

http://answers.microsoft.com/en-us/...p-errors/324d5a5f-d658-456c-bb82-b1201f735683

The below suggestion is an extract from the link above by Andre Da Costa (MVP)

You need to convert the drive or partition from NTFS to GPT

To manually wipe a drive and convert it to GPT:

• Turn off the PC, and put in the Windows installation DVD or USB key.
• Boot the PC to the DVD or USB key in UEFI mode. For more info, see Boot to UEFI Mode or Legacy BIOS mode.
• From inside Windows Setup, press Shift+F10 to open a command prompt window.
• Open the diskpart tool:

Type: diskpart

5. Identify the drive to reformat:

Type: list disk

6. Select the drive, and reformat it:

Type: select disk <disk number>

Type: clean

Type: convert gpt

Type: exit

7. Close the command prompt window.

8.Continue the Windows Setup installation.

When choosing an installation type, select Custom. The drive will appear as a single area of unallocated space.

Select the unallocated space and click Next. Windows begins the installation.

Windows Setup: Installing using the MBR or GPT partition style

Hope this information helps. Get back to us with the results. We look forward to hear from you.