Sleep Mode Not Working Windows 11 Fix [2026]

Quick Answer: PC won't sleep because background apps request wake locks. Run powercfg /requests to see what's blocking sleep, then disable wake timers in Power Options.

Symptoms

PC never goes to sleep
Sleeps then immediately wakes
Sleep option grayed out
Fans stay on in sleep

Root Cause

Wake timers, USB devices, network adapters, or Modern Standby conflicts.

Fix

Method 1: Check Sleep Blockers

powercfg /requests

Shows which app/driver is preventing sleep.

Method 2: Disable Wake Timers

Power Options → Change plan settings → Advanced
Sleep → Allow wake timers → Disable

Method 3: Disable USB Wake

Device Manager → Network adapter → Properties → Power Management → Uncheck "Allow this device to wake the computer"

Method 4: Check Hybrid Sleep

Control Panel → Power Options → Advanced → Sleep → Hybrid sleep → Off

How Againly Helps

Againly runs check_power_management to detect wake blockers and sleep conflicts.

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Related: Docking Not Charging Fix

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