The dongle had worked for years on Windows 7. But last week, a Windows 10 update had silently murdered its driver. Now, Device Manager showed a sad yellow triangle next to “Unknown USB Device (Invalid Configuration Descriptor).”

He opened → Action → Add legacy hardware → Next → “Install the hardware that I manually select from a list” → Next → Show All Devices → Next → Have Disk → pointed to that same .inf file.

Then—the little bong of USB connection. The NCK dongle’s red light turned green.

He launched his card reader tool. The smart card clicked in the slot. The stream decrypted.

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