System News


YubiServer - System Maintenance

The Yubikey validation server will be unavailable due to a scheduled OS upgrade on Wednesday, 27 January 2021, from 12:00-13:30 Eastern Time. There will be intermittent outages of the Yubikey validation service during this period that will prevent Yubikey users form getting Kerberos tickets and using OpenID Connect. Kerberos tickets obtained before the maintenance period begins will allow users to authenticate. Yubikey users are highly encouraged to obtain a Kerberos ticket before the maintenance period begins to prevent any work stoppages. CAC users will not be affected. If you have any questions, please contact the HPC Help Desk by calling 877-222-2039 or emailing

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