Diagnosing a stuck Windows Update with read-only PowerShell checks before any repair

A developer has written a PowerShell health check to figure out why a Windows Update stalls at 0% or fails with the same error code. The script reviews the Windows Update services, checks for pending restarts across several signals, measures the update cache and free disk space, and lists recent Windows Update errors from the event log. It only performs the cache reset, which stops and restarts services and renames folders, when it is needed and runs it through a confirmation prompt that supports -WhatIf. The post advises trying Windows' built-in Windows Update troubleshooter first, and it notes the code has been syntax-checked and tested with simulated data but not yet run on a real Windows machine.