api.yubico.com unscheduled downtime

One of the YubiCloud endpoints, api.yubico.com, was down between 2017-04-23 08:19:36 and 2017-04-23 10:37:25 UTC.

We are investigating what caused this issue and will update this blog with more information once we have it.

All other YubiCloud endpoints (i.e. api2, api3, api4 and api5) were operational during this time window.

Old clients which are only using the single endpoint api.yubico.com would appear to have been down. The only workaround at this time is to upgrade your client to the latest versions, which would simultaneously use all the available endpoints.