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Error message “Digital Signature Not Found”

The driver error occurs when a user installs or updates a driver on the System and when this occurs the user unable to install any update. System driver is the main component of the Windows Operating System and if the driver is corrupt or not properly installed it creates an issue to the user. When a driver unable to work and return error message we can find many reasons behind this issue but this driver error occurs if the Windows 2000 version is not properly reading the digital signature of the software package which blocks the installation.


If the service pack and update is not properly installed on the user machine it returns an error message to the user.

Symptoms of the Driver error “Digital Signature not found”

When a user installs Windows 2000 service pack at such moment the user may receive the below-given error message on the PC screen

Digital Signature Not Found

Cause of the Driver error “Digital Signature not found”

This driver error occurs if the Windows 2000 version is not properly reading the digital signature of the software package.

Below given the local computer policies which block the installation

1. Unsigned driver installation behavior
2. Unsigned non-driver installation behavior

Solution of “Digital Signature Not Found” when installing a Driver

You can fix this driver issue manually and to do this operation you can follow this. Click on Start and in the Run option type mmc and from the open box click on ok.
To fix driver error “Digital Signature Not Found” you have to click on the console menu and click on Add/Remove Snap-in and then click on Add and click on Group policy and now click on finish button and close it. Now double click on the below-given items to expand it.

1. Security Settings
2. Local Computer Policy
3. Security Options
4. Windows Settings
5. Computer Configuration
6. Local Policies
7. Console Root

You can find the two policies from the right side of the console and the two policies can be changed by the administrator’s security group. The two policies are unsigned driver installation behavior, unsigned non-driver installation behavior and after the installation will be complete you have to restore the driver signing and the previous setting. By this manual steps, you can know the solution of Driver error “Digital Signature Not Found” when installing a driver on the user PC. If you are unable to perform this operation manually you can contact the manufacturer of your PC to get technical assistance.

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How to resolve Digital Signature Not Found Error Message When You Install a Driver

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