Outlook 365: The security certificate has expired

Hello,
i get error for the certificate expired.
when i open the certificate the issuer is let’s encrypt.
how can i extend the certificate?

Hi @gilkor,

Do you have any knowledge of how the certificate was originally obtained? Did someone else do that for you?

i have no idea.
could be the domain host but not sure

Contact the administrator for your Office 365 account - he installed the let’s encrypt certificate.

This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.