Windows 11 - Ez100pu Driver

Since most Ez100pu drivers are unsigned, you must allow their installation:

Q: Is the Ez100pu driver free? A: Yes. It is distributed freely by reader manufacturers and government PKI authorities. Never pay for a driver download. Ez100pu Driver Windows 11

Q: Why does my antivirus flag the Ez100pu installer as a threat? A: Older drivers use techniques (like direct hardware access) that modern antivirus software considers risky. If you downloaded from an official source, add the installer folder to your antivirus exclusions before running. Since most Ez100pu drivers are unsigned, you must

Q: Can I use Windows 11’s compatibility mode? A: Yes. Right-click the setup.exe file from the legacy driver > Properties > Compatibility > Run this program in compatibility mode for Windows 8 or Windows 7. But this only helps the installer, not the driver signing. Cause: The driver attempted to start but failed

Q: My smart card reader works, but my tax software says “No reader found.” A: This is a middleware issue, not a driver issue. Reinstall the specific e-government security module (e.g., AnySign4PC, SignKorea, SafeSign). These often install their own outdated Ez100pu driver – uninstall them, install our clean driver first, then reinstall the middleware.

Cause: The driver attempted to start but failed due to a resource conflict or incompatible power management.

Fix: