: A simple reboot can sometimes resolve unexpected errors.
If you have recently renewed your ID card, it might be a v1.8 card.
Download the latest version directly from the official Belgium eID website. Reinstall the software and restart your computer. 4. Address "New Card" (v1.8) Compatibility
Use a lint-free microcloth lightly dabbed with isopropyl alcohol to gently wipe away accumulated body oils or grime from the card's chip.
If the certificates are revoked or unreadable, you may need to to ensure it supports the latest card format.