Windows’ driver signature enforcement (the JUQ439 driver uses a less common EV cert). Fix: Restart Windows → Advanced Startup → Disable Driver Signature Enforcement. Install the driver, then re-enable enforcement.
Preparation
No installation guide is complete without a troubleshooting section. Here are the top three issues users face: juq439mp4 install
After restarting, you should verify that the installation was successful. juq439mp4 install
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