ErrorFindly
0x0000009EBSODCritical

0x0000009E — User Mode Health Monitor | Blue Screen Fix Guide

USER_MODE_HEALTH_MONITOR

Windows 10Windows 11

What Does 0x0000009E Mean?

A user-mode health monitor detected that a critical user-mode component has become unresponsive.

Real-World Causes

  1. 1Critical system service hung
  2. 2Session Manager (smss.exe) unresponsive
  3. 3Csrss.exe hang
  4. 4Severe resource exhaustion

Symptoms

  • ⚠Blue screen with stop code USER_MODE_HEALTH_MONITOR
  • ⚠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 System File Checker (sfc /scannow)
  3. 3Check Windows Update
  4. 4Run DISM /Online /Cleanup-Image /RestoreHealth

Advanced Fix

For experienced users and IT professionals

  1. 1Analyze minidump with WinDbg
  2. 2Check Event Viewer for correlated errors
  3. 3Use Process Monitor to trace system activity
  4. 4Perform clean boot to isolate the cause

Frequently Asked Questions

What causes USER_MODE_HEALTH_MONITOR?
A user-mode health monitor detected that a critical user-mode component has become unresponsive.
Can I fix User Mode Health Monitor 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

0x000000EFCritical Process Died0xC000021AStatus System Process Terminated

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.