Troubleshooting a Stop 0xC000021A or STATUS_SYSTEM_PROCESS_TERMINATED

What caused the error?

The Stop 0xC000021A message occurs when Windows 7 switches into kernel mode and a user-mode subsystem (the Windows log on screen) and security can’t be guaranteed because of compromised security.  This problem can also be caused when an administrator has modified permissions in such a way that the system account can’t access system files and folders.

How do I fix it?

• If you recently installed software, uninstall it.
• If you recently installed or updated a driver, try rolling the driver back or uninstalling it.
• If you were backing up the computer, or recently backed up the computer using third-party backup tools, contact the software maker about the problem and make sure the backup software is compatible with Windows 7.

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Explore other guides about: Guides • Troubleshooting • Stop Errors.

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