OpenVPN Security Advisory: Dec 14, 2018
Action needed: Important update for OpenVPN Access Server

I am getting the error “mbedTLS: error parsing cert certificate : X509 – The date tag or value is invalid”


This is not a bug in OpenVPN or mbedTLS but is actually caused by incorrectly formatted certificates. See this detailed forum post for more info.

From version 1.1.1 the format check has been relaxed to accept also those certificates that were previously rejected with this error.

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