In Microsoft Exchange on-prem, there is a self-signed certificate called Microsoft Exchange Server Auth Certificate This not bound to any IIS web site, but still needed for authentication purposes. It is valid for 5 years. If the certificate has expired or is about to expire, you can renew it with the following procedure: Start the Exchange Management Shell and type: (Get-AuthConfig).CurrentCertificateThumbprint | Get-ExchangeCertificate | Format-List This should show you the details of Read more [...]

In Microsoft Exchange on-prem, there is an internal certificate that is bound to the back-end web site. This certificate is self-signed and valid for 5 years. It is called Micorosoft Exchange The subject of the certificate is the server name itself. Find below the procedure to renew this certificate. It does not matter if the certificate is already expired or still valid. Start the Exchange Management Shell Get the thumbprint of the current certificate: Get-ExchangeCertificate | where Read more [...]