On Wednesday, March 4, 2020, 3 million Transport Layer Security (TLS) certificates issued by Let’s Encrypt will be revoked because of a Certificate Authority Authorization (CAA) bug. This is 2.6% of the over 116 million active certificates issued by Let’s Encrypt.

Let’s Encrypt have not set an exact time for revocation of the certificates, however, they say that the earliest timeframe will be UTC 00:00.

A secure TLS certificate ensures that your site visitors have encrypted traffic between their browsers and your website. Site visitors might see a certificate revoked error, a “not secure” warning, or other security warnings in their browser that may erode trust in your site.  If your site is effected by this, please contact our technical support for assistance in resolving the issue.

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