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Decommissioning old YubiOTP API validation servers


On March 23, 2020 Yubico will be decommissioning the old YubiOTP API validation servers. This is the final step of an ongoing initiative to improve reliability and scalability of the YubiOTP validation service.  If you are hardcoding the IP address of any of the API servers, then you will see responses indicating that they have been decommissioned.

These responses will look like:


To ensure that you are not adversely impacted, please follow the instructions at

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