Encounter "No Valid Certificate" when using Smart Card Login

JK 0 Reputation points

Hi all,

I have users who encountered "No Valid Certificate" when logging to his machine with his Smart Card when out of Office. His login credentials have been cached while on Office LAN. Issue only resolved when users connect machine back to Office LAN. Any ideas what could contribute to "No Valid Certificate" error?



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  1. Yanhong Liu 3,965 Reputation points Microsoft Vendor


    Thank you for posting in Q&A forum.

    Based on your description, here are some possible solutions:

    1. Update certificate cache: Make sure the certificate cache in the smart card is up to date. Sometimes certificates expire or need to be updated, especially if the user is not in the office for a long time and uses a smart card to log in.
    2. Use corporate VPN: It is recommended to connect to the company's intranet through the company's virtual private network (VPN) before using a smart card to log in. This ensures that all authentication requests can be correctly routed to the internal CA to complete the certificate verification.
    3. Update certificates offline: If possible, make sure that all necessary certificates and CRLs on the user's smart card are up to date before departure, and have a complete trust chain locally.
    4. Check the smart card reader driver: Make sure the smart card reader driver is up to date and confirm that there are no driver problems in the external device management.

    Best Regards,

    Yanhong Liu


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