To fix the Windows 8 Untrusted Certificate Authority error message when attempting smart card login, perform the following steps:
Download the following Certificates into a common folder:
HHS Domain Device Root CA (expires 6/25/2027)
NIH-DEVICE-SUBCA (expires 5/2/2019)
HHS-FPKI-Intermediate-CA-E1 (expires 5/9/2019)
HHS-SSP-CA-B7 (expires 7/6/2017)
Install the downloaded certificates into the local NTAUTH Store, by executing the following commands:
Note: Execute these commands in a command window running in the same folder as the downloaded certificates.
certutil -enterprise -addstore NTAuth HHSDeviceRoot.cer
certutil -enterprise -addstore NTAuth NIH-DEVICE-SUBCA2-SHA1.cer
certutil -enterprise -addstore NTAuth HHS-FPKI-Intermediate-CA-E1.cer
certutil -enterprise -addstore NTAuth HHS-SSP-CA-B7.cer
Information and Assistance
For additional information, search the NIH IT Knowledge Base for tutorials, instruction sheets and user guides or refer to the appropriate How-To Guide.
For questions or user support, please contact the NIH IT Service Desk.