Perhaps you have had the unfortunate experience of getting locked out of OWA and ECP due to SSL problems, after configuring a new SSL certificate. Or, maybe you want to change the Exchange server SSL certificate via management shell.
Use the Exchange Management Shell to change the certificate. First, log in to the Exchange Server host system and open Exchange Management Shell.
Run Get-ExchangeCertificate to list all the available certificates on the system.
Get-ExchangeCertificate
Then, after finding the certificate you want to activate, run Enable-ExchangeCertificate as below to switch to the designated SSL certificate:
Enable-ExchangeCertificate -Thumbprint 5113ae0233a72fccb75b1d0198628675333d010e -Services POP,IMAP,SMTP,IIS
After successfully completing the change, run iisreset to restart IIS.
iisreset
This article applies to Exchange Server 2013 running on:

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