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How to Fix Device Security Page Not Available Error in Windows 11: Step-by-Step Guide

Encountering the “Device Security Page Not Available” error in Windows 11 can be frustrating, especially when you want to check or manage your device’s security settings. This error usually appears when Windows Security cannot access the device’s security features properly.

Fortunately, there are several straightforward ways to fix this problem. The solutions range from simple restarts to more technical settings adjustments.

This guide will walk you through each step in an easy-to-understand manner, helping you restore access to your Device Security page quickly and safely.

Follow along carefully, and you’ll have the issue resolved in no time.

Quick Note Before You Begin

  • Make sure your Windows 11 is up to date. Sometimes, updates include fixes for system errors like this one.
  • Check if your device supports all security features. Some older hardware may not have certain security chips or firmware.
  • Ensure that your user account has administrative privileges, as some fixes require changes to system settings.
  • Close all other apps before starting troubleshooting to avoid conflicts.

Step 1: Restart Your Computer

Restarting your system is the simplest and often the most effective first step. It refreshes all running processes and can resolve temporary glitches that prevent the Device Security page from loading.

  1. Click on the Start menu (Windows icon) at the bottom left of your screen.
  2. Select the Power button.
  3. Choose “Restart” from the options.
  4. Once your PC restarts, try opening the Device Security page again.

If the error persists, move on to the next step.

Step 2: Check Windows Security Service Status

The Device Security page relies on the Windows Security service to function properly. If this service is not running, you will see errors.

  1. Press Win + R on your keyboard to open the Run dialog box.
  2. Type services.msc and press Enter. This opens the Services window.
  3. Scroll down and locate Windows Security Service or Security Center.
  4. Right-click on it and select Properties.
  5. Make sure the Startup type is set to Automatic.
  6. If the service is not running, click the Start button.
  7. Click Apply and then OK.
  8. Close the Services window and check if the Device Security page opens now.

Step 3: Run Windows Security Troubleshooter

Windows has built-in troubleshooters that can automatically detect and fix common problems with system apps, including security features.

  1. Open the Settings app by pressing Win + I.
  2. Go to System > Troubleshoot > Other troubleshooters.
  3. Look for Windows Security or similar security-related troubleshooters.
  4. Click Run next to it.
  5. Follow the on-screen instructions to complete the troubleshooting process.
  6. After the troubleshooter finishes, try accessing the Device Security page again.

Step 4: Verify TPM (Trusted Platform Module) Status

The Device Security page often depends on TPM, a chip that helps with hardware-based security. If TPM is disabled or malfunctioning, the page may not load.

  1. Press Win + R to open the Run dialog.
  2. Type tpm.msc and press Enter.
  3. The TPM Management window will open. Look for the status message on the main screen.
  4. If TPM is not found or reports errors, you may need to enable it in your BIOS/UEFI settings:
    • Restart your PC and enter BIOS/UEFI (usually by pressing Delete, F2, or F10 during boot).
    • Look for a setting named “TPM,” “Security Chip,” or “PTT” (Platform Trust Technology) and enable it.
    • Save changes and exit BIOS/UEFI.
  5. Once TPM is enabled, boot into Windows and check the Device Security page again.

Step 5: Reset Windows Security App

If the problem continues, resetting the Windows Security app can fix corrupted files or settings that block access.

  1. Open the Settings app (Win + I).
  2. Go to Apps > Installed apps.
  3. Scroll down to find Windows Security.
  4. Click on the three-dot menu next to it and select Advanced options.
  5. Scroll down and click the Reset button.
  6. Confirm the reset and wait for it to complete.
  7. Try opening the Device Security page again.

Alternative Method: Use PowerShell to Re-register Windows Security

If resetting does not help, re-registering the Windows Security app via PowerShell can fix deeper issues.

  1. Right-click the Start menu and select Windows Terminal (Admin) or PowerShell (Admin).
  2. In the window that opens, paste the following command and press Enter:
    3. Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage
  3. Wait for the process to finish.
  4. Restart your PC and check if the Device Security page is accessible.

FAQs

Why does the Device Security page say “Not Available”?

This usually happens because key security services are stopped, TPM is disabled, or there is corruption in the Windows Security app.

Can outdated Windows cause this issue?

Yes, running outdated Windows versions can lead to bugs and incompatibilities. Keeping Windows updated helps avoid such errors.

Is TPM required for Device Security?

Most advanced security features in Windows 11 depend on TPM. Without it, some functions may not be available.

Will resetting Windows Security delete my data?

No, resetting the app only clears temporary data and settings related to the app itself, not your personal files.

What should I do if I can’t enable TPM in BIOS?

Check your device’s manual or manufacturer website for specific instructions. Some older devices may not support TPM or require firmware updates.

When Nothing Works

If you have tried all the above steps and still see the “Device Security Page Not Available” error, consider these final options:

  • Run System File Checker (SFC): Open Command Prompt as administrator and run sfc /scannow to repair system files.
  • Perform a System Restore: Roll back to a previous point when the Device Security page was working.
  • Contact Microsoft Support: Visit the official Microsoft Support for personalized assistance.
  • Consider a Clean Installation: As a last resort, reinstall Windows 11 to fix deep system issues.

Conclusion

The “Device Security Page Not Available” error in Windows 11 is a common hurdle that can usually be fixed with simple troubleshooting steps. Starting with a restart, checking security services, and verifying TPM status covers most causes. If needed, resetting or re-registering the Windows Security app can resolve deeper problems.

By following this guide carefully, you can regain access to your device’s security settings and ensure your system stays protected. Remember to keep your Windows updated and your hardware enabled for the best security experience.

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