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0x00000123BSODCritical

0x00000123 — Crypto Self Test Failure | Blue Screen Fix Guide

CRYPTO_SELF_TEST_FAILURE

Windows XPWindows VistaWindows 7Windows 8Windows 10Windows 11

What Does 0x00000123 Mean?

A cryptographic self-test failed. The system's cryptographic module did not pass its integrity verification.

Real-World Causes

  1. 1Corrupted cryptographic libraries
  2. 2Hardware security module failure
  3. 3System integrity violation

Symptoms

  • ⚠Blue screen with stop code CRYPTO_SELF_TEST_FAILURE
  • ⚠System reboots unexpectedly
  • ⚠Possible data loss from unsaved work

DIY Fix

Beginner-friendly steps you can try at home

  1. 1Restart your computer
  2. 2Run full antivirus scan
  3. 3Run System File Checker (sfc /scannow)
  4. 4Check Windows Update

Advanced Fix

For experienced users and IT professionals

  1. 1Analyze minidump for security subsystem failure
  2. 2Check security event logs
  3. 3Verify system file integrity with DISM
  4. 4Review Group Policy and security settings

Frequently Asked Questions

What causes CRYPTO_SELF_TEST_FAILURE?
A cryptographic self-test failed. The system's cryptographic module did not pass its integrity verification.
Can I fix Crypto Self Test Failure myself?
In many cases yes. Start with basic troubleshooting like restarting, updating drivers, and running System File Checker. If the issue persists, advanced analysis of crash dumps may be needed.

Related Error Codes

0x00000120Bitlocker Fatal Error0x00000109Critical Structure Corruption

About the Author

Windows Troubleshooting Team

Verified against official Microsoft documentation and real-world diagnostic data. Error behavior confirmed across Windows 10, Windows 11, and Windows Server.