Hi @Anonymous ,
If it is a self-signed certificate, you need to renew it by yourself. OpenSSL is a great option for you to renew certificate. The renew steps are similar to create a new certificate.
- Export CSR from the expired certificate.
- Then generate a new certificate like the old one.
- Import the new certificate to replace the old one.
If it is not a self-signed certificate, you should contact the certificate provider to renew it.
The certificate you show will auto renew, you don't need to worry it. If it doesn't renew after 7 days, you need to open a support case for this.
Here is the link of CSS support:
https://support.microsoft.com/en-us/hub/4343728/support-for-business
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Best regards,
Bruce Zhang