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ERROR_WAKE_SYSTEM
The system has awakened from a low-power state
ERROR_WAKE_SYSTEM corresponds to Win32 error value documented as: The system has awoken Execution resumed after sleep or another wake-capable state. The wake source and elapsed time matter because external resources can expire even though process memory remains present.
Where the result appears in real systems
- Power broadcast handling.
- Scheduled wake tasks.
- Laptop lid, network, USB, or timer wake events.
- Service reconnection logic.
What to collect before making changes
Query the last wake source with powercfg, record sleep and wake timestamps, power state, network changes, and device arrival events; correlate Kernel-Power and Power-Troubleshooter records.
Handling and recovery
Refresh time-sensitive state, reconnect transports, and re-evaluate pending deadlines. Components should debounce bursts of device and network notifications that commonly follow resume.
What not to infer from this code
This result describes the transition back to execution; it does not identify which device or policy caused the wake without additional power diagnostics.
References
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