Ensure your Windows 11 is fully updated, as cumulative updates often fix USB-CCID stack issues.
Right-click on the existing EZ100PU or generic entry and choose . ez100pu smart card reader driver windows 11 better
Windows 11's "Memory Integrity" feature often blocks older EZ100PU drivers because they lack modern digital signatures. To fix this, go to Windows Security > Device Security > Core Isolation and toggle Memory Integrity . Restart your computer afterward. Use the Built-in WUDF Driver: Ensure your Windows 11 is fully updated, as
Disabling memory integrity does reduce the system's defenses against certain types of kernel-level attacks. However, as technical experts note, "關閉『記憶體完整性』雖會微幅降低系統對核心層級惡意攻擊的防禦力, 但對於一般網路交易與日常使用並無直接危害. 只要保持作業系統定期更新, 並維持良好上網習慣, 即可兼顧硬體使用需求與基礎安全." as technical experts note
Select and toggle Memory integrity to Off .