Show Alarms, Reminders & Calls on the Windows Lock Screen (11/10)

To show or hide alarms, reminders, and incoming VoIP calls on your lock screen in Windows 11, open Settings (Win + I), go to System > Notifications, expand the main Notifications panel, and check the option labeled Get notifications, alarms, and reminders on the lock screen. Unchecking this box immediately hides sensitive calendar alerts and incoming call pop-ups whenever your computer screen is locked, protecting your personal privacy without stopping sound alerts.

Understanding Lock Screen Notifications in Modern Windows

When you leave your computer unattended or step away from your workstation, Windows displays a lock screen to shield your personal documents and active programs from unauthorized access. However, by default, the operating system allows crucial system alerts—such as morning alarms set in the Clock app, calendar appointment reminders from Outlook, and incoming internet phone calls from Microsoft Teams or WhatsApp—to appear on top of that locked display. This architectural design ensures you never miss a urgent appointment or an incoming call merely because your display was locked.

While this capability offers clear operational convenience, it introduces a noticeable privacy exposure. Anyone walking past your desk can read appointment summaries, view the sender identity of incoming calls, or observe reminder details without entering a PIN or password. Balancing personal privacy against real-time convenience is the primary reason Microsoft provides granular controls for these banner alerts.

Ethan points out that understanding the distinction between visual notification banners and system sound events prevents most user confusion. "The operating system separates the rendering of visual toast banners from background system audio services," Ethan explains. "When you clear the lock screen notification setting, you are telling Windows to suppress the graphical display driver from drawing private text boxes on the lock surface. The background audio service hosting your scheduled alarm remains completely unaffected."

Whether you are maintaining strict privacy in a busy office environment, setting up digital signage, or managing customer-facing kiosk hardware, controlling what displays on an unauthenticated lock screen is a fundamental step in hardening your Windows workstation.

How to Configure Lock Screen Alerts on Windows 11

Windows 11 introduces a restructured Settings interface that consolidates multiple legacy notification switches into nested expandable menus. Follow these exact steps to control alarms, reminders, and incoming call alerts on Windows 11 version 25H2 and earlier builds.

Step-by-Step Procedure for Windows 11:

1. Open the system control panel by pressing Win + I on your keyboard, or right-click the Start button and choose Settings.
2. Ensure System is highlighted in the left navigation sidebar, then click on Notifications in the main right-hand panel.
3. Locate the primary Notifications master section at the top of the page. Click the small downward arrow icon located on the far right of the top toggle bar to expand the hidden options menu.
4. Check or uncheck the box labeled Get notifications, alarms, and reminders on the lock screen according to your privacy preferences.
5. Optionally, review the adjacent box for Show reminders and incoming VoIP calls on the lock screen if your current build displays explicit VoIP separation.

Navigating the Windows 11 Collapsible Traps

One of the most frequent friction points for users upgrading to Windows 11 is the introduction of hidden drop-down arrows within the Settings app. Unlike Windows 10, where every checkbox was immediately exposed on the primary screen, Windows 11 hides lock screen options behind expandable header cards. If you simply glance at the Notifications page, you will see a single master switch without any visible lock screen checkboxes.

Clicking directly on the text or the small chevron arrow on the Notifications card expands the container, revealing three critical sub-options: showing lock screen notifications, controlling notification sounds, and managing promotional Windows suggestions. Failing to click this master dropdown leaves users assuming the feature was removed entirely from the OS.

If you rely heavily on internet phone services such as Skype or Microsoft Teams, ensure that notification permissions for those specific applications are also enabled in the per-app list further down the page. Disabling global lock screen permissions will override app-specific settings across the system.

How to Configure Lock Screen Alerts on Windows 10

Windows 10 features a flat, accessible layout for notification settings inside its System menu. Although Windows 10 reached its official end of support on October 14, 2025, hundreds of millions of systems remain active globally under Extended Security Updates (ESU) coverage, which Microsoft extended through October 2027 for enrolled devices.

Step-by-Step Procedure for Windows 10:

1. Press Win + I to launch the Windows Settings interface.
2. Select the System category from the main dashboard grid.
3. Click on Notifications & actions from the left-hand navigation list.
4. Locate the Notifications heading in the main viewport.
5. Toggle the switch directly beneath Show alarms, reminders and incoming VOIP calls on the lock screen to either On or Off.

Understanding the Windows 10 Notification Master Switches

In Windows 10, the notification panel provides distinct toggle switches for standard app notifications versus high-priority alerts like alarms and VoIP calls. The first switch, "Show notifications on the lock screen," controls broad app alerts, such as new email banners or web browser updates. The second switch, "Show alarms, reminders and incoming VOIP calls on the lock screen," explicitly governs priority events.

If you choose to turn off general notifications on the lock screen but leave the alarms and VoIP switch turned on, your computer will remain quiet for low-priority events like social media updates while still ringing and popping up full-screen interface controls when an incoming phone call or clock alarm triggers.

For users managing public-facing kiosks or shared presentation machines running Windows 10, turning off both toggles is strongly recommended to prevent accidental disclosure of private messages during operation.

Comparing Lock Screen Notification Options

To help you determine which combination of notification switches best matches your workflow, the following comparison tables break down the visual outcomes and behavioral differences across Windows operating system editions.

Understanding these distinct states allows administrators and personal computer owners to tailor notification behaviors precisely to their surroundings without fear of accidentally missing important wake-up alarms or time-sensitive scheduled events.

Edition Differences: Home vs Pro vs Enterprise

While the standard graphical interface inside the Settings application functions identically across Windows editions, the administrative tools available for managing lock screen notification defaults vary significantly depending on whether you operate Home, Pro, or Enterprise licenses.

Users running Windows Home edition must rely on the graphical Settings app or direct Registry manipulation to adjust notification behaviors. Professional and Enterprise administrators can deploy domain-wide policy templates to lock down these options across hundreds of corporate endpoints simultaneously.

Advanced Method: Group Policy and Registry Management

For system administrators managing enterprise fleets or power users who prefer scripting automated system deployments, Windows provides underlying administrative controls via Group Policy and the Windows Registry.

Method 1: Configuring Group Policy (Pro / Enterprise)

The Group Policy Editor allows administrators to enforce lock screen notification settings so that local users cannot override them.

1. Press Win + R to launch the Run dialog box.
2. Type gpedit.msc and press Enter. (Note: .msc stands for Microsoft Management Console snap-in file).
3. Navigate to: Computer Configuration > Administrative Templates > System > Logon.
4. In the right pane, double-click on Turn off app notifications on the lock screen.
5. Select Enabled to permanently hide lock screen notifications, or select Disabled to force notifications to remain visible. Click Apply and then OK.

Method 2: Registry Modification (All Editions / Windows Home)

On Windows Home edition, where Group Policy is unavailable, you can achieve the exact same restriction by adding DWORD keys to the Registry.

1. Press Win + R, type regedit, and press Enter to open the Registry Editor.
2. Navigate to the following path: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Notifications\Settings
3. Locate or create a DWORD (32-bit) Value named NOC_GLOBAL_SETTING_ALLOW_CRITICAL_TOASTS_ABOVE_LOCK.
4. Set its Value data to 0 to disable critical alarm and reminder pop-ups on the lock screen, or 1 to enable them.
5. Restart Windows Explorer or reboot your PC to apply the registry change.

Troubleshooting Lock Screen Notification Failures

If you have enabled lock screen notifications but your alarms, reminders, or VoIP calls still refuse to appear when your PC locks, work through these diagnostic failure modes to identify the root cause.

Symptom 1: Alarms Don't Ring When Laptop Display Turns Off

Underlying Cause: System Sleep vs. Modern Standby. Traditional desktop PCs and older laptops enter ACPI S3 sleep mode when idling. In S3 sleep, CPU execution halts entirely, preventing software clock timers from triggering audio alarms.

The Fix: Modern Windows laptops utilize Modern Standby (Instant On), which allows background tasks like alarms to execute. If your hardware lacks Modern Standby support, navigate to Settings > System > Power & sleep and set screen power-off options to turn off the monitor display while preventing the PC from entering full system sleep when plugged in.

Symptom 2: Options are Grayed Out in Settings Menu

Underlying Cause: Domain Group Policy or Third-Party Privacy Software enforcement. If your computer is connected to a work or school account, your enterprise administrator may have deployed an administrative policy preventing lock screen alerts.

The Fix: Open Settings > Accounts > Access work or school to review active organization policies. If this is a personal machine, verify that third-party privacy optimization suites have not applied locked registry overrides.

Ethan elaborates: "Think of the global setting as the main circuit breaker for your house, and individual app settings as light switches in individual rooms. Turning on the main breaker enables electricity to flow, but if the individual room switch is flipped off, the light bulb remains dark."

To fix per-app suppression, scroll down the Notifications page to the list of installed applications, click the specific application (such as Teams, WhatsApp, or Outlook), and verify that Show notification banners on lock screen is explicitly toggled to On.

How Do Not Disturb and Focus Interact with Lock Screen Alerts

In modern Windows builds, Microsoft replaced the legacy Quiet Hours feature with Focus sessions and Do Not Disturb (DND) modes. Understanding how these features interact with lock screen alarms prevents missed appointments during critical work sessions.

When Do Not Disturb is enabled in Windows 11, incoming app notifications bypass pop-up banner displays and route silently into the Notification Center tray. However, Microsoft treats clock alarms as high-priority critical events by default.

Even when Do Not Disturb is active and your screen is locked, scheduled alarms configured in the native Windows Clock app will break through the quiet rules and sound at full volume while displaying an on-screen dismissal interface. Calendar reminders and incoming VoIP phone calls, on the other hand, will be suppressed unless you add those specific communication apps to your Priority notifications exception list under Settings > System > Notifications > Set priority notifications.

Frequently Asked Questions

How do I show alarms and reminders on the lock screen in Windows 11?

Open Settings by pressing Win + I, navigate to System, then select Notifications. Expand the Notifications dropdown menu by clicking on it, and check the box labeled Get notifications, alarms, and reminders on the lock screen.

Why are my alarms not going off when my laptop is asleep?

Windows alarms cannot wake up a computer that is in a deep sleep state unless your hardware supports Modern Standby (Instant On). If your PC enters traditional sleep or hibernation, scheduled alarms will not sound until the machine wakes up.

Does disabling lock screen alarms turn off sound notifications entirely?

No. Unchecking lock screen notifications only suppresses the visual pop-up banners and alerts on your display when the PC is locked. Alarm sounds configured through the Windows Clock app will still play unless your master volume is muted or Focus/Do Not Disturb is active.

Where did the VoIP calls lock screen setting go in Windows 11?

Microsoft streamlined the notification menu in Windows 11. The legacy toggle that explicitly named incoming VOIP calls was merged into the broader Get notifications, alarms, and reminders on the lock screen checkbox under Settings > System > Notifications.

How do I allow alarms and reminders on the lock screen in Windows 10?

In Windows 10, open Settings by pressing Win + I, choose System, click Notifications & actions in the left pane, and toggle the switch under Show alarms, reminders and incoming VOIP calls on the lock screen to the On position.

Can prying eyes read my private reminder details from the lock screen?

Yes, if full lock screen notifications are enabled. To protect your privacy while still seeing alerts, leave general lock screen notifications turned off or uncheck the option to show detailed status updates on your lock screen background.

Do I need administrator permissions to change lock screen notification settings?

No. Toggling notification preferences through the standard Settings application affects only your individual Windows user profile and does not require administrator privileges.

How can system administrators enforce lock screen notification policy across a network?

Network administrators on Windows Pro, Enterprise, or Education editions can enforce lock screen privacy policies using Group Policy Editor (gpedit.msc) or by pushing registry entries under the System\Notifications registry key.

Will turning on Do Not Disturb suppress critical clock alarms?

By default, Windows treats clock alarms as high-priority events. Even when Do Not Disturb or Focus mode is turned on, alarms set in the native Windows Clock app will bypass the quiet rules unless manually overridden in notification priority settings.

How do I reverse these changes if I stop getting incoming call alerts?

Re-open Settings, navigate to System > Notifications, expand the top section, and re-check the box for Get notifications, alarms, and reminders on the lock screen. Ensure your communication app also has lock screen permissions enabled.

Why is the lock screen notification setting grayed out on my PC?

If notification options are grayed out, your computer may be controlled by organizational Group Policy rules set by your IT department, or a global privacy setting in Windows is disabling all background app updates.

Does Windows 10 still get security updates for these notification systems?

Windows 10 reached its official end of support on October 14, 2025. Standard consumer security updates have ended unless your device is enrolled in Microsoft's Extended Security Updates (ESU) program, which covers security fixes through October 2027.

Can I enable lock screen alarms on Windows 11 Home edition?

Yes. The lock screen notification toggles are fully available in the Settings menu on Windows 11 Home, Pro, Enterprise, and Education editions alike.

What is the Registry path to hide lock screen notifications?

Lock screen notification options are stored in the Windows Registry under HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Notifications\Settings. Creating or modifying DWORD values like NOC_GLOBAL_SETTING_ALLOW_CRITICAL_TOASTS_ABOVE_LOCK controls these alerts.

How do I stop third-party apps like Teams or Skype from ringing on the lock screen?

Open Settings > System > Notifications, scroll down to the list of individual apps, select the specific messaging application, and turn off the toggle for Show notification banners on lock screen.

Does changing lock screen settings impact my battery consumption?

Allowing notifications to light up the display screen while locked slightly increases display power draw on laptops and tablets, but the overall impact on battery life is negligible for standard usage.

Revision note. Originally published August 2015. Rewritten August 2026 for Windows 11 and Windows 10. Microsoft consolidated legacy notification settings into collapsible menus in Windows 11 and phased out direct VOIP labeling in favor of unified lock screen permissions. If you have been struggling with unexpected lock screen alerts or missed alarms, taking a few moments to tune these options will restore both your peace of mind and your privacy.