How to Fix Ctrl + Alt + Del Not Working in Windows 11

The Ctrl + Alt + Del keyboard shortcut is a critical system function in Windows 11, used to access security options such as Task Manager, sign out, lock the PC, or change passwords. When this shortcut stops working, it can make troubleshooting system freezes, unresponsive apps, or login issues much more difficult.

This issue can occur due to disabled security policies, corrupted system files, keyboard driver problems, third-party software conflicts, or accessibility and system configuration changes. In some cases, the keyboard itself works normally, but Windows fails to recognize the secure attention sequence.

Fixing Ctrl + Alt + Del not working in Windows 11 involves checking keyboard functionality, system policies, services, and core Windows components. The steps below explain all reliable solutions in detail.

How to Fix Ctrl + Alt + Del Not Working in Windows 11

The methods below focus on restoring system-level keyboard shortcuts and Windows security functions. Follow each method carefully and test the shortcut after applying it.

1. Check Whether the Keyboard Is Working Properly

Rule out hardware-related issues first.

1. Try using the keyboard in other apps such as Notepad.
2. Test the Ctrl, Alt, and Delete keys individually.
3. If using an external keyboard, reconnect it or try a different USB port.
4. If possible, test with another keyboard.

If any of the keys are faulty, the shortcut will not work.

2. Restart Windows Explorer and System Processes

A stuck system process can block secure shortcuts.

1. Press Ctrl + Shift + Esc to open Task Manager.
2. Locate Windows Explorer.
3. Right-click it and select Restart.
4. Close Task Manager and try Ctrl + Alt + Del again.

This refreshes the Windows shell environment.

3. Use the On-Screen Keyboard to Test the Shortcut

This helps confirm whether the issue is software-related.

1. Open Settings.
2. Go to Accessibility.
3. Select Keyboard.
4. Turn on On-Screen Keyboard.
5. Press Ctrl + Alt + Del using the on-screen keys.

If it works here, the issue is likely with the physical keyboard or drivers.

4. Check Group Policy Settings

Group Policy can disable Ctrl + Alt + Del functionality.

1. Press Windows + R, type gpedit.msc, and press Enter.
2. Go to User Configuration > Administrative Templates > System.
3. Open Ctrl+Alt+Del Options.
4. Ensure policies like Remove Task Manager are set to Not Configured.
5. Close Group Policy Editor and restart the PC.

Incorrect policies can block security options.

5. Verify Registry Settings for Secure Attention Sequence

Registry changes can disable the shortcut.

1. Press Windows + R, type regedit, and press Enter.
2. Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
3. Ensure values related to DisableCAD are not enabled.
4. Close Registry Editor and restart Windows.

Improper registry values can block Ctrl + Alt + Del.

6. Disable Third-Party Security or Customization Software

Some tools override system shortcuts.

1. Temporarily disable third-party antivirus or endpoint protection.
2. Close system customization tools or keyboard remapping apps.
3. Test Ctrl + Alt + Del again.
4. If it works, add exclusions or uninstall conflicting software.

Security tools may block secure attention sequences.

7. Update or Reinstall Keyboard Drivers

Driver issues can affect system shortcuts.

1. Press Windows + X and open Device Manager.
2. Expand Keyboards.
3. Right-click the keyboard device and select Update driver.
4. If the issue persists, select Uninstall device.
5. Restart Windows to reinstall the driver automatically.

This refreshes keyboard input handling.

8. Disable Filter Keys and Accessibility Features

Accessibility settings can interfere with key combinations.

1. Open Settings.
2. Go to Accessibility.
3. Select Keyboard.
4. Turn off Filter Keys, Sticky Keys, and Toggle Keys.
5. Restart the system.

These features can block multi-key shortcuts.

9. Repair Corrupted System Files

System file corruption can break core shortcuts.

1. Open Terminal (Admin).
2. Run the following command: sfc /scannow
3. After completion, run: DISM /Online /Cleanup-Image /RestoreHealth
4. Restart the PC after both scans finish.

These tools repair critical Windows components.

10. Create a New User Account

User profile corruption can disable shortcuts.

1. Open Settings.
2. Go to Accounts > Other users.
3. Click Add account.
4. Create a new local or Microsoft account.
5. Set it as an Administrator.
6. Sign in to the new account and test Ctrl + Alt + Del.

If it works, the original profile may be corrupted.

Final Thoughts

Ctrl + Alt + Del not working in Windows 11 is usually caused by keyboard driver issues, accessibility settings, group policy or registry changes, or system file corruption rather than a hardware failure. In most cases, disabling conflicting settings or repairing system files restores the shortcut quickly.