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NotMyFault v4.5
By Mark Russinovich
Published: May 7, 2026
👁 Download
Download NotMyFault (1.4 MB)
Introduction
Notmyfault is a tool that you can use to crash, hang, and cause kernel memory leaks on your Windows system. It’s useful for learning how to identify and diagnose device driver and hardware problems, and you can also use it to generate blue screen dump files on misbehaving systems. The download file includes 32-bit and 64-bit versions, as well as a command-line version that works on Nano Server. Chapter 7 in Windows Internals uses Notmyfault to demonstrate pool leak troubleshooting and Chapter 14 uses it for crash analysis examples.
Screenshots
Usage
You can use the GUI versions or the command-line version. Notmyfault requires administrative privileges.
Usage:
notmyfaultc.exe crash crash_type_num
crash type:
0x01: High IRQL fault (Kernel-mode)
0x02: Buffer overflow
0x03: Code overwrite
0x04: Stack trash
0x05: High IRQL fault (User-mode)
0x06: Stack overflow
0x07: Hardcoded breakpoint
0x08: Double Free
Or notmyfaultc.exe hang hang_type_num
hang type:
0x01: Hang with IRP
0x02: Hang with DPC
👁 Download
Download NotMyFault (1.4 MB)