This book is a full-color transcript of Software Diagnostics Services training sessions with 20 step-by-step exercises, notes, source code of specially created modeling applications, and more than 60 questions and answers. Covers more than 50 crash dump analysis patterns from x86 and x64 process memory dumps. Learn how to analyze application and service crashes and freezes, navigate through process user space and diagnose heap corruption, memory and handle leaks, CPU spikes, blocked threads, deadlocks, wait chains, and many more patterns of abnormal software behavior with WinDbg debugger. The training uses a unique and innovative pattern-oriented analysis approach developed by Software Diagnostics Institute to speed up the learning curve. Prerequisites: Basic Windows troubleshooting. Audience: Software technical support and escalation engineers, system administrators, security researchers, reverse engineers, malware and memory forensics analysts, software developers and quality assurance engineers, site reliability engineers. The 5th edition was fully reworked with new memory dumps, additional slides, exercises, and analysis patterns. It was further revised with some exercises updated to Windows 11, expanded Q&A, , and optional Docker image.