windbg-user-wait-chain-analysis SKILL.md skillA
windbg-user-wait-chain-analysis from microsoft/win-dev-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add microsoft/win-dev-skills/windbg-user-wait-chain-analysis@git:20261007.790b577Pins git:20261007.790b577 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- microsoft/win-dev-skills
- Path
plugins/windbg/skills/windbg-user-wait-chain-analysis/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261007.790b577, committed Oct 7, 2026
- First version recorded
- Oct 7, 2026
- Size
- 4,973 bytes
- Repository stars
- 475
- License
- MIT
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.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Cross-Process Wait Chain Analysis **Load `windbg-diagnostic-method` first** if it is not already loaded in this conversation, and apply it throughout for evidence ranking, hypothesis testing, confidence calibration, independent review, and report validation. This skill adds the bug-family-specific commands and evidence requirements. ## Detection Look for blocked work in an application, service, or user-mode driver host (including UMDF), and threads in wait, COM, RPC, or I/O paths. The process displaying the symptom may not own the underlying defect. Idle worker threads waiting normally are not evidence of a hang. ## Workflow ### 1. Identify the affected operation and its thread ```text .lastevent ~*kb !runaway ``` Confirm why the dump was collected. A dump is a snapshot; `.lastevent` does not by itself certify "hang" or "no crash." Identify the UI/serving thread from application evidence instead of assuming thread zero is always the UI thread. If work is spinning rather than blocked, collect appropriate CPU evidence. ### 2. Identify each wait and its owner Inspect frames around `WaitForSingleObject`, `WaitForMultipleObjects`, COM …
Read the whole file at its exact version.
How to install
mdr add microsoft/win-dev-skills/windbg-user-wait-chain-analysis@sha256:90e7aa94c93a5c7bThe line at the top of this page pins the label git:20261007.790b577, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_os2ckwu55t6fn3fp)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, all committed on Oct 7, 2026.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261007.790b577 latest | 2026-10-07 | 790b577 | 4,973 B | A | view · diff |
| git:20261007.e1050cd | 2026-10-07 | e1050cd | 4,844 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4973 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
microsoft/win-dev-skills · 475 stars · license MIT · pushed 2026-10-19 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_os2ckwu55t6fn3fp GET https://markdownregistry.com/api/v1/resolve?ref=microsoft/win-dev-skills/windbg-user-wait-chain-analysis GET https://markdownregistry.com/api/v1/blob/90e7aa94c93a5c7b4f4c0a8fef047fe6c315ac447eef643de42fcc5230d80b2e
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.