Fixing the 'Secure Boot Violation - Invalid Signature Detected' in Windows

Fixing the ‘Secure Boot Violation – Invalid Signature Detected’ in Windows

A secure boot violation is an annoying error that prevents your computer from booting into Windows. Usually, you are stuck in the UEFI Windows screen. To solve this annoying problem, Techquack offers the best methods to fix the security violation error. It is reported that the “Secure Boot Violation Invalid Signature Detected” error often occurs the first time you start Windows. The error remains on the startup screen even when you press the Enter key to continue the startup process.

The “Invalid Signature Detected” error is not unique to Asus computers and has been around for years. The error indicates that the system cannot boot due to an invalid signature related to the security policy. Most users who are not technology experts panic because they cannot start Windows as usual and even think the computer is down. All they see is a UEFI or BIOS screen showing the following:

Security breach – Invalid signature detected. Check the security policy in the configuration

Fear not, however, as there are several ways to fix the invalid signature detection error without going to tech support or taking your laptop to a repair shop – these services tend to be quite expensive. In this article, we’ll show you how to fix the “Secure boot violation – invalid signature detected” error with a simple step-by-step guide.

The original “Invalid signature detected” problem occurred in Windows 7 when Asus users applied update KB3133977. The patch was originally intended to prevent disk encryption on Windows 7 machines. Although this fixes the problem, it causes another problem on Asus computers, and users started to see the “Invalid signature detected” error. The new problem has been fixed by Microsoft, but the error still occurs in later versions of the operating system.

What is the cause of the “Security breach on boot – invalid signature detected” problem in Windows?

What is the cause of the "Security breach on boot - invalid signature detected" problem in Windows?

As a rule, it is very difficult to find the cause of this problem, given its obscure nature and the fact that it is quite typical for ASUS and DELL. However, boot-safety is one of the main reasons. The “Secure Boot” function must be disabled in your computer’s BIOS settings if you want to get rid of this problem.

Another important reason is the Digital Driver Signature Enforcement, which performs checks that can prevent your computer from booting properly. Be sure to disable it and see if the problem persists!

How to solve the “Secure Boot Violation – Invalid Signature Detection” problem in Windows?

How to solve the "Secure Boot Violation - Invalid Signature Detection" problem in Windows?

Set the boot priority or disconnect the external drive

If the “Secure Boot Violation” error occurs when you connect an external drive (either a hard disk or a USB flash drive) to your computer before booting, go to the BIOS/UEFI settings and set the boot priority (boot order). Make sure that the system is booted from the internal hard disk or from Windows Boot Manager, not from removable media. Make sure the hard drive is the first in the boot order.

To make it easier, just shut down the computer, disconnect the external drive, and reboot the system. In all other cases, you need to make the following fixes:

  1. Disable boot security checks
  2. Activate CSM and deactivate fast boot.
  3. Identify all keys in Key Management as not installed.
  4. Check the signature of disabled drivers
Disable security download verification

This is often enough to correct the “Invalid Signature Detected” error. Here’s how you should proceed:

  1. Go to the BIOS.
  2. On the main tab, go to the Security, Authentication, or Startup tab using the right arrow key (→). Under one of these (depending on your BIOS/UEFI setup program) is the “Secure Boot” menu. Use the down arrow key (↓) to select an option, then press Enter.
  3. Select Boot Security Check.
  4. Select Disabled.

Note: There is another way to disable the security system. If menu number 2 above has an item labeled “Operating System Type,” go to it and select “Other Operating System.” That should work. It doesn’t matter if your PC has a Windows operating system.

Enable CSM and disable fast boot

After completing the procedure in step 2:

  1. Look for the “Quick Boot” option. It is located in the Security, Authentication, or Boot tab, depending on your BIOS.
  2. Select the option and press the Enter key.
  3. Now select “Disable”.
  4. Scroll down to run CSM and select On.
  5. Select the Backup and Exit tab.
  6. Select Save Changes and Exit.
  7. Select Yes to confirm the action.

Note: You can also save changes made in the BIOS by pressing the F10 key on your keyboard. However, this also depends on your device. If you have made the above fixes, the error discussed should now be fixed.
However, if the error persists, revisit your BIOS or UIEFI and try the following solutions.

Under Key Management, set all keys to “Uninstalled”.

The “Invalid Signature Detected” error may occur after a UIE/BIOS update.
In this particular scenario, the bootloader is now able to detect a mismatch between the operating system and the saved keys. You will then need to reload the keys to correct the error.

Here’s how to do it:

  1. Log into your BIOS and go to the Security tab.
  2. Find the key management and select it.
  3. Set all keys to “Not set.”
Disable driver signature control.

If the problem persists at this point, some unsigned device drivers may conflict with the system security module. To fix this, you must disable driver digital signature verification. How to do this :

  1. To access the recovery environment, boot Windows 10 from the installation media.
  2. Press Shift + F10 when the installation screen appears.
  3. Now, to permanently disable driver signature verification, type the following lines into the command prompt window and press Enter after each line:
  4. bcdedit.exe – set boot parameters DISABLE_INTEGRITY_CHECKS
  5. bcdedit.exe – set CONFIGURATION TEST

The system should then be able to boot without any problems. There is a “test mode” watermark in the lower right corner of the PC screen. This indicates that the installation of unsigned or untested drivers is no longer restricted. Now you need to find and remove the unsigned drivers that caused the “Invalid signature detected” error.

To do this, follow these steps:

  1. Press the Windows + R logo key on your keyboard to open the Run dialog box.
  2. Type sigverif in the text box and press OK or Enter. The file signature verification utility will open.
  3. Click the Start button.
  4. A scan of the entire system will start. Any unsigned drivers installed on your computer will be detected.
  5. When the scan is complete, a list will be displayed. Uninstall the problematic drivers using the Device Manager, then install a signed and updated version.

Frequently Asked Questions

Disable the secure boot process. Reboot your computer; press and hold the boot menu options key to enter the boot menu. Disable the secure boot option and check.

  1. With the computer on, quickly and consecutively press a specific key (F2, LED, F12, ESC, etc.) to enter the UEFI BIOS.
  2. Go to the Boot (or Security) tab, select the Secure Boot option and turn it off.
  3. Press F10 to save your changes and restart.

ASUS computer technology may be responsible for the boot security violation. Another possible reason is that forcing a digital driver signature prevents Windows from starting smoothly.

Can't I disable safe boot on Acer or any other PC? One reason could be that you don't have the correct supervisor password. Second, the BIOS version might be outdated. So you need to update it.

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