Windows BSOD Error 0x0000006C — REFMON_INITIALIZATION_FAILED Fix

What Does This Error Mean?

Error 0x0000006C means the Windows Reference Monitor — a security component that enforces access rules — failed to start. This is called REFMON_INITIALIZATION_FAILED. The Reference Monitor is like a security guard at every door in Windows. If it cannot start, Windows refuses to boot. This typically happens due to corrupted system files or a damaged Windows security component.

Affected Models

Windows 10
Windows 11
Windows 8.1
Windows Server 2016
Windows Server 2019

Common Causes

Core Windows security system files are corrupted or missing
A failed Windows update corrupted the security subsystem components
Malware damaged the Windows Reference Monitor or related security files
A third-party security application conflicted with the Windows security subsystem
Disk errors on the system drive corrupted critical boot-time security files

How to Fix It

Run Startup Repair. Boot into the Windows Recovery Environment (restart three times while Windows is loading to trigger automatic recovery). Choose Troubleshoot > Advanced options > Startup Repair.

Startup Repair automatically detects and fixes many problems that prevent Windows from starting, including corrupted boot components.
Run System File Checker from recovery. In the Windows Recovery Environment, open Command Prompt and type: sfc /scannow /offbootdir=C:\ /offwindir=C:\Windows

Running sfc from outside Windows is more effective when Windows itself cannot boot. Replace C: with the correct drive letter if needed.
Run DISM to repair the Windows image. In the recovery Command Prompt, type: DISM /Image:C:\Windows /Cleanup-Image /RestoreHealth — let it complete, then restart.

DISM repairs the Windows system image files that the security subsystem depends on.
Check the drive for errors. In the recovery Command Prompt, type: chkdsk C: /f /r — press Y to confirm and restart. The check runs before Windows loads.

If the system drive has bad sectors, they may have corrupted the security files. Chkdsk marks bad sectors so Windows avoids them.
Perform a Windows repair install. Download the Windows Media Creation Tool on another PC, create a USB installer, boot from it, and choose 'Upgrade this PC now.' This repairs Windows while keeping your files and apps.

A repair install replaces all Windows system files with fresh copies without wiping your personal data.

When to Call a Professional

If Startup Repair and system file tools do not resolve this error, the Windows security subsystem may be too damaged to repair without a full reinstall. A technician can attempt a repair install that keeps your files intact. If malware is suspected, professional removal is recommended before reinstalling.

Frequently Asked Questions

What is the Windows Reference Monitor?

The Windows Reference Monitor is a core security component built into the kernel. It enforces security policies — deciding which programs and users can access which files, memory, and devices. Every time a program tries to open a file or access a resource, the Reference Monitor checks if it is allowed. If this component cannot start, Windows cannot guarantee a secure environment and refuses to boot.

Could malware cause this error?

Yes. Some sophisticated malware targets Windows security components specifically to disable them. If you recently noticed unusual behavior before this crash appeared, malware is worth considering. Boot from a separate antivirus rescue USB (Kaspersky Rescue Disk or similar) to scan the system without loading the infected Windows installation.

Will a repair install delete my files?

No. A Windows repair install (also called an in-place upgrade) replaces system files while keeping your personal files, installed applications, and settings intact. However, it is always a good idea to back up important files to an external drive before proceeding, just in case something goes wrong during the process.