FAQs

Troubleshooting: USB Token/Smart Card Not Working on Windows Server 2022 (Switch Driver from UMDF2 to WUDF)

Updated on July 18, 2026

Overview

On Windows Server 2022, the default driver for a Universal Serial Bus (USB) token or smart card reader may be Microsoft Usbccid SmartCard Reader (UMDF2) — the User-Mode Driver Framework version 2 (UMDF2) variant. Some USB tokens require the Windows User-Mode Driver Framework (WUDF) variant of this driver instead. By following this article you will switch the smart card reader driver from UMDF2 to WUDF in Device Manager so the token is detected and its certificate becomes accessible in the SafeNet application. The article covers what the fix applies to, the driver-change steps, how to verify the fix, and what to do if the WUDF option is missing.

Applies to

Windows Server 2022

A USB token or smart card device using the Microsoft Usbccid SmartCard Reader driver

Resolution: Change the smart card reader driver

Unplug (remove) the USB token from the server.

Open Device Manager.

Expand Smart card readers.

Right-click Microsoft Usbccid SmartCard Reader (UMDF2) and select Update driver.

Select Browse my computer for drivers.

Select Let me pick from a list of available drivers on my computer.

Choose Microsoft Usbccid SmartCard Reader (WUDF) and complete the installation.

Verify

Plug the USB token back in.

Open the SafeNet application.

Confirm that the certificate is visible.

Notes

If you do not see the WUDF option in the driver list, ensure Windows has access to the required inbox drivers and that the device is correctly detected under Smart card readers.