A: Absolutely not. Do not use it. It will crash Windows 11. Use version 3.1.6.0 or newer instead.
: In the Registry Editor, go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography\Calais , right-click Permissions , and ensure LOCAL SERVICE has Full Control . 📥 Where to Download Drivers
For the technically inclined, there is a small community of developers working on open-source driver solutions. One notable project on GitHub ( tayandenga/ezIFD ) provides source code for a generic USB CCID driver that could potentially work with the EZ100PU . This is a more advanced, unsupported path and not recommended for average users due to potential stability and security risks. However, it represents a potential long-term solution for compatibility. ez100pu smart card reader driver windows 11 better
For users whose work environments require the highest levels of information security and who cannot compromise by disabling memory integrity, a long-term solution exists. Experts recommend "考慮更換具備『Windows 11 免驅動 (CCID標準)』認證之新型讀卡機, 以獲得最完善的原生系統支援." Newer smart card readers that support the CCID standard work natively with Windows 11 without requiring third-party drivers, eliminating compatibility issues entirely.
Windows 11 is aggressive with power saving. If your reader randomly disconnects: Go to > Change advanced power settings . Expand USB settings > USB selective suspend setting . Set it to Disabled . Firmware Check A: Absolutely not
For users who prefer Microsoft-validated drivers, the Windows Update Catalog provides another reliable option. Navigate to the catalog through your web browser and search for "EZ100PU" by name or hardware ID. The drivers available through this catalog have been tested and approved by Microsoft, offering an additional layer of compatibility assurance.
If you encounter issues, try these troubleshooting steps. Use version 3
: This usually means Windows 11 Core Isolation is blocking an unsigned legacy driver. Ensure you have downloaded the latest CCID-compliant version from Castles Technology, which includes a valid Microsoft digital signature. Error: Reader Lights Up, But Cards Aren't Read
Then, run this command as Administrator to purge old driver packages:
(community-maintained)