Open your Z3X box carefully. Remove the smart card from its internal slot, wipe the gold chips with a dry microfiber cloth (or a tiny bit of isopropyl alcohol), and reinsert it firmly.

Windows often tries to install its own generic drivers, which can conflict with the Z3X hardware. Open . Look for "Smart cards" or "Unknown Device."

Hardware issues are the most common culprits. The smart card inside the Z3X box is similar to a SIM card and can shift or collect oxidation.