Mender blog

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1st Oct 2021

certificate expiry failed fix letsencrypt root solution verification

Sudden certificate verification errors

Some of our hosted Mender customers started reporting they could no longer connect to the service on September 30th, 2021.

Running the Mender client, a solution to manage software on IoT devices, errors similar to the following is output on command line:

Error code 12: server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.cr... Read the article