How to Resolve “Windows cannot verify the digital signature for this file” Error

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The error message “Windows cannot verify the digital signature for this file” typically occurs when a driver or system file lacks a valid digital signature. This security feature is designed to prevent malicious or unauthorized software from running on the system. While this protection is crucial, it can sometimes cause issues when trying to install legitimate drivers or run specific applications.

Causes of the Error

Several factors can trigger this error, including:

• Attempting to install a driver that lacks a valid digital signature.
• Corruption of system files or the signature verification process.
• Recent Windows updates or security changes.
• Malware infections that interfere with signature verification.

How to Fix the Error

There are several methods to resolve this issue. Try the solutions below one by one until the problem is fixed.

1. Boot into Advanced Startup Options

To disable driver signature enforcement temporarily:

1. Restart the computer while holding Shift.
2. Go to Troubleshoot > Advanced Options > Startup Settings.
3. Select Disable Driver Signature Enforcement by pressing the corresponding key.
4. After rebooting, try installing the problematic driver again.

2. Enable Test Signing Mode

Test Signing Mode allows the installation of unsigned drivers:

bcdedit /set TESTSIGNING ON

After running the command in an Administrator Command Prompt, restart the computer. To disable this mode later, use:

bcdedit /set TESTSIGNING OFF

3. Use System File Checker

Corrupt system files may be causing the issue. Run the System File Checker tool:

sfc /scannow

If the scan detects problems, it will attempt to fix them automatically. Restart the computer afterward.

4. Check for Malware

A malware infection could be interfering with digital signature verification. Perform a full system scan using Windows Defender or third-party antivirus software.

5. Repair Boot Configuration Data

Incorrect BCD settings might prevent the system from verifying signatures. To rebuild BCD:

1. Boot into Advanced Startup Options.
2. Open Command Prompt from the advanced options.
3. Type the following commands one by one:

   bootrec /fixmbr
   bootrec /fixboot
   bootrec /scanos
   bootrec /rebuildbcd

4. Restart the computer.

6. Restore the System to a Previous State

If the issue started after a recent update or installation, restoring Windows to a previous state might resolve it:

1. Open Advanced Startup Options.
2. Select System Restore and follow the prompts to restore the system to a working state.

7. Reinstall the Problematic Driver

If a specific driver is causing the issue, reinstall it:

1. Press Win + X and select Device Manager.
2. Right-click the problematic device and choose Uninstall Device.
3. Restart the computer and allow Windows to reinstall the driver.

Frequently Asked Questions

What is driver signature enforcement?

Driver signature enforcement is a Windows security feature that prevents the installation of unsigned or altered drivers, ensuring system stability and security.

Is it safe to disable driver signature enforcement?

Disabling it temporarily can help install necessary drivers, but keeping it off permanently may expose the system to security threats.

How can I re-enable driver signature enforcement?

Restart the computer to automatically re-enable it. Alternatively, enter the following command in an administrator Command Prompt:

bcdedit /set nointegritychecks off

What if none of the methods work?

If the error persists, consider resetting Windows or performing a clean installation to eliminate deeper system issues.

By following these steps, users should be able to resolve the digital signature verification error promptly and restore normal system functionality.

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