Fix Windows C000021A Fatal System Error

 

problem: Windows C000021A Fatal System ErrorThis error is usually caused by misconfigured system files that create registry errors within your operating system. Windows errors can cause program lock-ups, slow PC performance, system crashes, computer freezing and more.

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Cause: Registry errors generally occur when new programs are installed over old ones without the old programs being completely uninstalled. This can cause registry pile-ups and error messages. Another potential cause of these error messages can come from malicious software such as adware, spyware, and viruses.

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SolutionS: Scan and repair any missing or damaged Windows registry files using RegCure Pro. After the registry issues are resolved, it is recommended to optimize your PC by removing any spyware, adware and viruses with Plumbytes.

STEP 1: Automatically Fix Windows C000021A Fatal System Error with RegCure Pro

STEP 2: Optimize your PC with Plumbytes.

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Solution One: Automatically Fix Windows C000021A Fatal System Error errors with RegCure Pro


1) Download and install RegCure Pro to fix Windows C000021A Fatal System Error errors.
Windows C000021A Fatal System Error
2) Install program and click Scan button.
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3) Click the Fix Errors button when scan is completed.
4) Restart your computer normally to have a check.

 

Solution Two: Run a full system scan with Plumbytes Automatically


Plumbytes is one of the most powerful spyware removal tools on the market. Plumbytes can help you detect and delete various kinds of malware, spyware, viruses and adware from your computer. Follow the removal steps below to automatically remove malicious files.


Step 1: Download removal tool Plumbytes by clicking on the below button.
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Step 2: Following the installation wizard to install it on your PC. After the installation, launch Plumbytes and click ‘Run a Scan’ to perform a full and quick system scan on your PC.
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Step 3: As soon as finishing the system scan, choose Select all and then click Remove Now to get rid of all the threats on your PC
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Posted by: Greg Zimmer
Last updated:
Windows C000021A Fatal System Error
Operating Systems Supported
  • Windows 10
  • Windows 8
  • Windows 7
  • Windows Vista (SP-2)
  • Windows XP (SP-3)
Minimum System Requirements
  • 50 MB of free hard drive space
  • Internet Explorer 6 and above
  • Administrative access rights
Windows C000021A Fatal System Error