Hi Pat54457,
Welcome to Centrify!
Could you please help to provide us some more background information to help us understand better the issue:
1. What is the OS X version you are using?
2. What kind and what version of smart card you are using?
3. What version of Centrify SmartCard Express you are using?
4. Did you try other browsers like Chrome or Firefox?
Please check if you have configured the browsers:
Moreover, could you check with the below and see if you have loaded the DoD certificate correctly?
Please feel free to contact us if you need any assistance.
Regards,
Albert