wmic is gone and your Node process tree is silently wrong on Windows 11
The last post I wrote here ended on a line I had to go and check: killing a shell does not kill what the shell started. This is what I found underneath it, and one of the things is a dependency a lot of people have without knowing. Numbers below come from Windows 11 Home, build 26200, in August 2026. Run the commands yourself, they take a minute. I work on NestMux, which is where I hit this, but…
The issue at hand is that the WMIC tool, which was previously used for process management on Windows, has been deprecated and removed in recent versions of Windows 11. This has led to problems in Node.js processes, as they rely on wmic to build accurate process trees. One popular library, pidtree, falls back to PowerShell's Get-CimInstance when wmic is unavailable, but this can result in inaccurate process trees if not handled properly.
Developers should use Get-CimInstance to take a snapshot of the process tree and build a parent-child map for accurate process management, especially when killing processes or dealing with orphaned processes.
Written by urgent.news from Dev.to's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
