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Error 0xC000021A

How to Fix STATUS_SYSTEM_PROCESS_TERMINATED BSOD (0xC000021A)

Fix time: 20 mins Difficulty: Hard 0 views Updated: July 2026

Fix boot crashes caused by Winlogon or CSRSS subsystem termination.

Symptoms

  • Startup BSOD 0xC000021A prevents desktop access

Common Causes

  • Mismatched system files after aborted updates, malware infection

Step-by-Step Solutions

Method 1: Disable Driver Signature Enforcement

  1. Restart PC. On failure screen, select Advanced Options > Troubleshoot > Advanced options > Startup Settings > Restart.
  2. Upon reboot, press 7 or F7 to select Disable Driver Signature Enforcement.

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Frequently Asked Questions

Corrupt third-party system themes or malware inject files into core subsystem processes.