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0x000000F5BSODCritical

0x000000F5 — FLTMGR File System | Blue Screen Fix Guide

FLTMGR_FILE_SYSTEM

Windows 10Windows 11

What Does 0x000000F5 Mean?

An error occurred in the Filter Manager (FltMgr.sys), which manages file system filter drivers.

Real-World Causes

  1. 1File system minifilter driver bug
  2. 2Antivirus filter driver crash
  3. 3Filter driver conflict
  4. 4Corrupted filter manager state

Symptoms

  • ⚠Blue screen with stop code FLTMGR_FILE_SYSTEM
  • ⚠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 chkdsk /f /r on the affected drive
  3. 3Run System File Checker (sfc /scannow)
  4. 4Check drive health with manufacturer tools

Advanced Fix

For experienced users and IT professionals

  1. 1Run chkdsk /f /r from Recovery Environment
  2. 2Analyze minidump for faulting file system driver
  3. 3Check S.M.A.R.T. data for drive health
  4. 4Consider drive replacement if errors persist

Frequently Asked Questions

What causes FLTMGR_FILE_SYSTEM?
An error occurred in the Filter Manager (FltMgr.sys), which manages file system filter drivers.
Can I fix FLTMGR File System 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

0x00000022File System0x000000A4CNSS File System Filter

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.