Should You Enable Automatic Device Locking with Dynamic Lock
- 14 steps
- Includes a restart or sign-out
Dynamic Lock in Windows 10 and 11 keeps your computer secure by locking it automatically when you step away. It uses Bluetooth to connect with nearby devices, such as your phone, to sense your absence and lock your PC. If you leave your phone paired to your computer and walk away, the computer can lock itself, which adds a layer of security.
To use Dynamic Lock, you need a device with Bluetooth, such as a smartphone, that can stay paired to your computer. Once it is set up, Windows watches the Bluetooth connection and locks the PC when your phone moves out of range. This protects your data and saves you from locking the PC by hand each time you walk away. Setup takes a few minutes. This guide uses the Windows 11 Settings app.
Yes, you should enable automatic device locking on Windows 11 with Dynamic Lock if you step away from your PC often. Pair your phone under Settings Bluetooth & devices, then go to Settings Accounts Sign-in options, scroll to Dynamic lock, and check “Allow Windows to automatically lock your device when you’re away.” Windows then locks the PC about 30 seconds after your phone leaves Bluetooth range.
What is Dynamic Lock?
Dynamic Lock is a Windows feature that uses Bluetooth to lock your PC automatically when you’re away. It does this by connecting to a smartphone or another Bluetooth device. When that device goes out of range, your PC locks itself so nobody else can use it.
It only locks the session. Your apps and documents stay open, and you sign back in with your usual password or PIN.
How to Enable Automatic Device Locking with Dynamic Lock
Bluetooth must also stay turned on, on both the PC and the phone. If Bluetooth is off on either device, Windows cannot see the phone and cannot tell whether you are nearby. If no phone is paired, the Dynamic lock option may be unavailable, so pair first and then turn the feature on.
Follow the steps in this order.
- On your phone, open its Bluetooth settings, turn Bluetooth on and leave that screen open so the phone is discoverable.
- On the PC, open Settings by clicking the Start button and then selecting the gear icon.
- Go to Settings Bluetooth & devices and make sure the Bluetooth toggle is on. (On Windows 10 the page is Settings Devices Bluetooth & other devices)
- Click Add device, then choose Bluetooth . On Windows 10 the button is Add Bluetooth or other device.
- Select your phone from the list. When a pairing code appears, confirm that it matches on the PC and on the phone, and accept the pairing request on both. The phone should now show as Paired or Connected in the device list.
- Go back to the main Settings page and select Accounts to open your account settings and sign-in options.
- Select Sign-in options.
- Scroll down to the Dynamic lock section. If it is not visible, expand Additional settings, or scroll further.
- Check Allow Windows to automatically lock your device when you’re away to turn the feature on. If the box is greyed out, the phone is probably not paired yet or Bluetooth is off. Go back to the pairing steps.
To turn it off later, return to the same page and clear the check box. You do not need to restart the PC for either change.
The delay is short but not instant, so don’t count on it if you only step away for a moment. Dynamic Lock only locks the PC. It does not unlock it when the phone comes back, so you still sign in with your password, PIN or other sign-in method.
In short: open Settings, select Accounts, choose Sign-in options, and under Dynamic lock check the option that lets Windows lock your device automatically when your paired Bluetooth device is out of range.
Why Enable Automatic Device Locking?
Dynamic Lock adds security by reducing the chance that someone else uses your PC while you’re not there. It is useful in shared offices and other workspaces, where an unlocked PC could lead to a data breach. It also covers the times you simply forget to lock the PC, because the lock happens as soon as you carry your phone away.
Potential Drawbacks
Dynamic Lock is helpful, but it has limits you should know about before you rely on it.
- Bluetooth Dependency: The feature relies on Bluetooth, which may have range issues or interference. Walls, other wireless devices and a phone left in a bag can all weaken the signal. The same range limits mean a phone left near the PC will keep it unlocked even when you are gone.
- Battery Life: Keeping Bluetooth on all the time can use some battery, mainly on your phone and on laptops. The effect is usually small, but it is worth watching.
- Unintentional Locking: If you move out of range briefly, your PC might lock and interrupt your work. You then have to sign in again. Your open apps stay as they were.
Manual Lock as a Backup
Even with Dynamic Lock, it's wise to secure your PC manually. Press Windows key + L to lock it right away. This is the safe choice if Dynamic Lock has connection problems or if you need the PC locked sooner than the 30-second delay.
Windows has two other settings that work well alongside Dynamic Lock, or in place of it if you don't want to rely on Bluetooth:
- Screen saver logon screenIn the Screen Saver Settings window, tick On resume, display logon screen. When the screen saver starts after your chosen idle time, the PC asks for your sign-in when you wake it. You can reach this window through Settings Personalization Lock screen Screen saver
- Sign-in requirement after being awayIn Settings Accounts Sign-in options, use If you've been away, when should Windows require you to sign in again to choose how long the PC can be away, for example after it sleeps, before it asks for a sign-in.
What if Dynamic Lock Isn't Working?
If Dynamic Lock doesn't work, check these things in order:
- Confirm Bluetooth is on for both the PC and the phone.
- Open Settings Bluetooth & devices and check that your phone is listed as paired. If it is missing or shows an error, remove it and pair it again.
- Check that the Dynamic lock box under Settings Accounts Sign-in options is still ticked.
- Stay patient after you leave. The lock comes about 30 seconds after the phone is out of range.
- If the problem continues, check the Bluetooth support settings under Devices in Settings (Bluetooth & devices in Windows 11), and look for a Bluetooth driver update from your PC maker.
Limitations and System Requirements
Dynamic Lock needs Windows 11 (Windows 10 reached end of support on October 14, 2025) and a PC with a Bluetooth radio. It is available in all Windows 11 editions, including Home and Pro, so your edition is not a limitation. If you don't see the Bluetooth toggle at all, the PC may have no Bluetooth hardware. A USB Bluetooth adapter can fix that on a desktop.
What to Do Next
For more on protecting your PC, see Windows Security (Microsoft Defender) for the built-in protection tools. You may also want to review the Windows Privacy Settings to keep control of your data and privacy options.
Frequently asked questions
How do I enable automatic lock in 🪟 Windows 11?
Open Settings and go to Accounts Sign-in options Dynamic Lock. Check the box next to "Allow Windows to automatically lock your device when you're away". You'll need a Bluetooth device like a smartphone paired to your PC for this to work.
How to get computer to lock automatically?
Use Dynamic Lock in Settings Accounts Sign-in options. Enable it and keep a Bluetooth device paired to your PC. Your computer will lock when that device moves out of Bluetooth range. Alternatively, adjust your screen timeout in Settings System Power & battery
Why is my PC automatically locking?
Dynamic Lock is locking your PC because it's enabled and your paired Bluetooth device (usually your phone) has moved out of range. Turn it off in Settings Accounts Sign-in options Dynamic Lock if you don't want automatic locking, or keep your phone closer to your computer.
Does 🪟 Windows 11 have smart lock features?
Yes. Windows 11 includes Dynamic Lock, which uses Bluetooth to automatically lock your PC when a paired device like your smartphone moves out of range. Enable it in Settings Accounts Sign-in options Dynamic Lock for added security without manual locking.
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About the Author
Richard
Tech Writer, IT Professional
Richard is a writer at Geek Rewind who turns complex IT tasks into clear, step-by-step guides. He draws on years of hands-on experience in system administration and enterprise IT operations, focusing on Windows, Linux and WordPress: the problems people actually run into, and the fixes that work. His server and WordPress guides come from systems he runs himself. Richard builds and maintains the platform behind Geek Rewind, from its Ubuntu servers and Nginx configuration to its custom WordPress plugins. Many new tutorials start with readers' questions, and he's always glad to answer them in the comments.
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