Use when a native app, service, or user-mode driver host allocation fails; distinguish VA exhaustion, fragmentation, and commit pressure. Not for managed .NET heap growth, proving a leak from one snapshot, or corruption.
Install
npx skills add microsoft/win-dev-skills --skill windbg-user-virtual-memory-exhaustionnpx skills add microsoft/win-dev-skills --skill windbg-user-virtual-memory-exhaustion -a claude-code -gnpx skills add microsoft/win-dev-skills --skill windbg-user-virtual-memory-exhaustion -a codex -ggemini skills install https://github.com/microsoft/win-dev-skills.git --path plugins/windbg/skills/windbg-user-virtual-memory-exhaustiongh skill install microsoft/win-dev-skills windbg-user-virtual-memory-exhaustiongit 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-virtual-memory-exhaustion ~/.claude/skills/windbg-user-virtual-memory-exhaustion # Claude Code
cp -R /tmp/microsoft__win-dev-skills/plugins/windbg/skills/windbg-user-virtual-memory-exhaustion ~/.agents/skills/windbg-user-virtual-memory-exhaustion # Codex, Cursor, Gemini CLI, Copilot, OpenCode