Update System Patches if Windows 7 cannot verify the digital signature of TP-Link driver software

To improve the authenticity of the Windows system, Microsoft has updated its signature algorithm from SHA-1 to SHA-2 since 12th March in 2019. For customers running Windows 7, they will need to update and install Windows system patches with the SHA-2 code-signing migrated.

In this situation, Windows 7 users not updating the SHA-2 signature algorithm will receive the Windows Security pop-up notifications as below when installing a TP-Link driver.

Error code 1: Windows 7 identifies TP-Link driver software has an Authenticode (TM) signature and requests to install the driver software.

Error code 2: Windows 7 cannot verify the publisher of TP-Link driver software and request to install the driver software.

To eliminate the above Windows Security notifications, here are two suggestions.

One: ignore the Windows Security notifications and move on to install the driver. However, because this problem is caused by the signature algorithm used on Windows 7, next time when you install any device drivers, same Windows Security notifications will pop up again.

Two: update and install system patches with the SHA-2 code-signing migrated from Microsoft. This method will solve your problem once and for all. Please refer to the following instructions step by step.

1. Download Windows system patches KB4474419 and KB4490628 from Microsoft official web site according to different Windows 7 system versions.

http://www.catalog.update.microsoft.com/search.aspx?q=kb4474419

http://www.catalog.update.microsoft.com/search.aspx?q=4490628

Note: only Windows 7 Service Pack (SP1) system can update and install the system patches KB4474419 and KB4490628. Please update your system to Windows 7 SP1 first if you want to install these two patches.

2. Verify whether the service status of Windows Update Service started. Please go to Device Manager -> Services -> highlight Windows Update -> change Startup Type as Manual and apply this change -> click on Start and save these settings.

Note: If Windows Update Service is disabled or stopped, Windows system patches would not be installed successfully.

3. Install Windows system patches KB4474419 and KB4490628 one by one.

4. Reboot the computer.

5. Install the TP-Link driver again, and it will be installed smoothly.

Get to know more details of each function and configuration please go to Download Center to download the manual of your product.