Choose and point to your extracted driver folder.
If your smart card reader is still not working after the update, try these quick fixes: The Reader Status Light is Off
Visit the official Castles Technology (the manufacturer of the EZPU series) support website or your specific regional government procurement portal. Locate the section. ez100pu smart card reader driver windows 11 better
Disable Windows 11’s "Enhanced Phishing Protection" temporarily. Go to Windows Security > App & browser control > Smart App Control > set to Off . This interferes with CCID card ATR (Answer To Reset) parsing.
While the EZ100PU is a legacy device, several sources provide compatible drivers for modern Windows versions: Choose and point to your extracted driver folder
How to Find the Best EZ100PU Smart Card Reader Driver for Windows 11 The EZ100PU Smart Card Reader
Many older links are dead. Look for the "CS-320_Driver_v3.0.0.21" or similar files (typically 2011/2012 era) designed for 64-bit Windows via DriverIdentifier . Unzip the Driver: Extract the contents of the download. While the EZ100PU is a legacy device, several
Which are you using to access your smart card portal?
: Windows 11 has a feature called Core Isolation, which defaults to having Memory Integrity turned on. Memory Integrity uses hardware virtualization to prevent malicious code from hijacking high-privilege system processes.
Uncheck and click OK . Verify the Smart Card Service Status
If it's missing, ensure it's plugged directly into a USB port on the PC, not a hub.