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0x00000041BSODCritical

0x00000041 — Must Succeed Pool Empty | Blue Screen Fix Guide

MUST_SUCCEED_POOL_EMPTY

Windows XPWindows VistaWindows 7Windows 8Windows 10Windows 11

What Does 0x00000041 Mean?

The must-succeed pool (nonpaged pool that cannot fail) is empty. A critical memory allocation cannot be satisfied.

Real-World Causes

  1. 1Extreme memory pressure
  2. 2Driver memory leak
  3. 3System running out of nonpaged pool

Symptoms

  • ⚠Blue screen with stop code MUST_SUCCEED_POOL_EMPTY
  • ⚠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 Windows Memory Diagnostic (mdsched.exe)
  3. 3Reseat RAM modules
  4. 4Check for Windows updates

Advanced Fix

For experienced users and IT professionals

  1. 1Test RAM with MemTest86 for multiple passes
  2. 2Analyze minidump with WinDbg
  3. 3Check for memory leaks using poolmon
  4. 4Inspect physical RAM slots and modules

Frequently Asked Questions

What causes MUST_SUCCEED_POOL_EMPTY?
The must-succeed pool (nonpaged pool that cannot fail) is empty. A critical memory allocation cannot be satisfied.
Can I fix Must Succeed Pool Empty 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

0x00000019Bad Pool Header0x0000004DNo Pages Available

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.