lock on sleep

The lock on sleep setting in Windows 11 controls whether the system requires sign-in after waking from sleep. When this feature is enabled, the PC locks automatically upon sleep, preventing unauthorized access. Users may encounter issues where the lock fails to engage, leaving the desktop exposed. Common causes include incorrect power settings, disabled dynamic lock, or registry misconfigurations. Troubleshooting steps involve checking the sign-in requirement in Settings, adjusting power options, and using powercfg or Registry edits to enforce the behavior. Restoring lock on sleep is important for security, especially on shared or portable devices.