Report why the PC didn't go to sleep when you walked away — via Microsoft Learn

Commandlow riskNeeds adminWindows 11Windows 10

This report covers the last three days and shows the periods when you weren't using the PC, and whether it actually slept — plus what blocked it if it didn't. Useful on desktops and older laptops where Sleep Study isn't available.

Takes effect right away

Command

Run in an administrator Command Prompt / Terminal window.

powercfg /systemsleepdiagnostics /output "%USERPROFILE%\Desktop\sleep-diagnostics.html"

Undo

del "%USERPROFILE%\Desktop\sleep-diagnostics.html"

Must be run from an elevated Command Prompt. Pair it with powercfg /requests to catch the blocker live.

Sources

Powercfg command-line options — /systemsleepdiagnostics — by Microsoft Learn

Source reviewed: 2026-11-02
Link checked: 2026-11-02
Tested hands-on: Not by Oddbyte.Me

Oddbyte.Me hasn't tried this on every Windows build, so keep the undo handy.

sleepdiagnosticspowercfgreportidle

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