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0x00000125BSODCritical

0x00000125 — NMR Invalid State | Blue Screen Fix Guide

NMR_INVALID_STATE

Windows XPWindows VistaWindows 7Windows 8Windows 10Windows 11

What Does 0x00000125 Mean?

The Network Module Registrar (NMR) is in an invalid state.

Real-World Causes

  1. 1Network module registration error
  2. 2Network driver conflict
  3. 3NMR subsystem corruption

Symptoms

  • ⚠Blue screen with stop code NMR_INVALID_STATE
  • ⚠System reboots unexpectedly
  • ⚠Possible data loss from unsaved work

DIY Fix

Beginner-friendly steps you can try at home

  1. 1Restart your computer
  2. 2Update network drivers
  3. 3Reset network settings
  4. 4Run network troubleshooter

Advanced Fix

For experienced users and IT professionals

  1. 1Analyze minidump for faulting network driver
  2. 2Use netsh to reset TCP/IP stack
  3. 3Check for firmware updates on network hardware
  4. 4Capture network trace for analysis

Frequently Asked Questions

What causes NMR_INVALID_STATE?
The Network Module Registrar (NMR) is in an invalid state.
Can I fix NMR Invalid State 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

0x00000126NETIO Invalid Pool Caller0x0000004FNDIS Internal Error

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.