Use when an app, service, or user-mode driver host is unresponsive on locks, COM/RPC, I/O, or another process; follow the blocker chain. Not for a crash solely from an exception stack.
Install
npx skills add microsoft/win-dev-skills --skill windbg-user-wait-chain-analysisnpx skills add microsoft/win-dev-skills --skill windbg-user-wait-chain-analysis -a claude-code -gnpx skills add microsoft/win-dev-skills --skill windbg-user-wait-chain-analysis -a codex -ggemini skills install https://github.com/microsoft/win-dev-skills.git --path plugins/windbg/skills/windbg-user-wait-chain-analysisgh skill install microsoft/win-dev-skills windbg-user-wait-chain-analysisgit clone --depth 1 https://github.com/microsoft/win-dev-skills /tmp/microsoft__win-dev-skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/microsoft__win-dev-skills/plugins/windbg/skills/windbg-user-wait-chain-analysis ~/.claude/skills/windbg-user-wait-chain-analysis # Claude Code
cp -R /tmp/microsoft__win-dev-skills/plugins/windbg/skills/windbg-user-wait-chain-analysis ~/.agents/skills/windbg-user-wait-chain-analysis # Codex, Cursor, Gemini CLI, Copilot, OpenCode