If Windows does not automatically install the driver, or if the reader is not responding correctly, you should download the latest driver from the official source.
How to Install and Troubleshoot the EZ100PU Driver on Windows 11
To verify that your EZ100PU is properly configured on Windows 11: Ez100pu Driver Windows 11
Castles Technology has officially acknowledged this compatibility issue. As of 2022, the manufacturer listed Windows 11 support for the EZ100PU driver on their website. However, subsequent testing revealed that even the "Windows 11 compatible" driver still triggered security warnings when Memory Integrity was enabled.
Use 7-Zip on the original Ez100pu installer or download from a trusted archive (e.g., Feitian R1. 64-bit version required). If Windows does not automatically install the driver,
Before downloading, you must know whether you need the 32-bit or 64-bit driver. To check:
to a USB port. Windows 11 should automatically search for and install the "Microsoft USBCCID Smartcard Reader (UMDF2)" driver. Check Windows Update : If it doesn't work immediately, go to However, subsequent testing revealed that even the "Windows
your computer. You can always turn this back on later if you decide to stop using the reader. 2. Download the Correct Driver
Press Windows Key + I to open the Settings menu.
Run the setup file (often named setup.exe or Ez100pu_Windows_Driver.exe ). Follow the on-screen instructions. to complete the installation. Troubleshooting Ez100pu on Windows 11