What does BSOD 0x5F (SECURITY_INITIALIZATION_FAILED) mean?

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: The Windows security subsystem failed during early initialization.

Could be also:
Constant	Type	OS
EOPNOTSUPP	errno	Linux
EMULTIHOP	errno	Mac
ENOTSOCK	errno	Solaris

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OBJECT_INITIALIZATION_FAILED	PROCESS_INITIALIZATION_FAILED

SECURITY_INITIALIZATION_FAILED

Security subsystem initialization failure for SECURITY_INITIALIZATION_FAILED

SECURITY_INITIALIZATION_FAILED is bug check code 0x0000005F.

This code indicates that kernel security initialization did not complete. It can involve token, audit, access-check, logon-session, policy, or security descriptor infrastructure during boot.

How to read it in a dump

The failure occurs before normal user logon; it is not merely an authentication denial.
Look for security subsystem status codes and early-loaded security or filter drivers.
System file integrity and registry/security policy state can be relevant.

What to check

Check early boot security products, credential/security policy changes, and corrupted system files.
Preserve the nested status code and stack.
If the system fails repeatedly at boot, compare safe-mode and recovery-environment logs.

References

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