Whoops, Microsoft Forgets to Renew Authentication Certificate

[engine]

Microsoft has forgotten to renew an authentication certificate for Microsoft Teams. Whooops!

We've determined that an authentication certificate has expired causing, users to have issues using the service. We're developing a fix to apply a new certificate to the service which will remediate impact. Further updates can be found under TM202916 in the admin center.

[twitter.com...]


It can happen to anyone!

[lammert]

This is not the first time. It happened also in February 2013 when an Azure certificate expired.

Since I switched my sites to Let's encrypt with automatic renewal enabled, I almost forgot the hassle it was to every few years generate CSRs in the right format, upload them to the provider, and then distributing the keys and certificates.

[engine]

Since I switched my sites to Let's encrypt with automatic renewal enabled

Good move.
The only error I once made was having two forms of payment expire at the same time. Silly me. I changed it so that the forms of payment all have different expiry dates.