If your reader is throwing a Code 31 error, you can force the driver to re-attempt initialization during boot. Press Windows Key + R , type , and click OK.
pnputil /delete-driver oem0.inf /uninstall pnputil /add-driver C:\Windows\System32\DriverStore\FileRepository\usbccid.inf_amd64\usbccid.inf
The Microsoft USB/CCID Smartcard Reader UMF 2 driver is a software component that enables communication between a USB smart card reader and the Windows operating system. Here's a detailed article on this topic: microsoft usbccid smartcard reader umdf 2 driver
Assign the older WUDF driver to the reader via Device Manager .
Smart cards are essential for modern enterprise security, providing secure authentication, data encryption, and digital signatures. At the heart of this infrastructure on Windows systems is the . If your reader is throwing a Code 31
Right-click and select Uninstall device . Disconnect the smart card reader from your PC. Restart your computer.
Instead of requiring hardware vendors to write custom, potentially buggy kernel-mode drivers for every new smart card reader, Microsoft provides this generic, high-quality driver. If a smart card reader is USB CCID-compliant, it will typically work out-of-the-box with this driver, without needing additional third-party software. Here's a detailed article on this topic: Assign
The Microsoft USB/CCID Smartcard Reader UMF 2 driver is typically installed automatically by Windows when a compatible smart card reader is connected to the computer. However, in some cases, the driver may need to be installed manually.
In essence, any smartcard reader that complies with the CCID specification should work out-of-the-box on a modern Windows operating system using Microsoft’s in-box driver. This is where the "Microsoft USBCCID Smartcard Reader" driver enters the picture.
Microsoft frequently updates the generic CCID class driver via standard Windows Update payloads to patch security gaps and expand device compatibility.
Running the smart card reader driver in user mode (UMDF 2) provides significant advantages: