Troubleshooting: Exchange – Unable to open OWA, ECP, or EMS after a self-signed certificate is removed from the Exchange Back End Website

Consider the following scenario when you are using Microsoft Exchange Server 2013 or Microsoft Exchange Server 2016: You remove the Microsoft Exchange Self-Signed certificate from the Exchange Back End Website by using Certificates MMC, Remove-Exchangecertificate, IIS Manager or another method. You clear the IIS cache by restart or IISReset. You are installing a new SSL Certificate to your Exchange system. In this scenario, several client protocols such as ECP, OWA, ActiveSync and Exchange Management Shell cannot connect. The following issues may occur: OWA and ECP display a blank page. ActiveSync users cannot receive emails. Exchange Management Shell will cannot connect and displays the following Error: New-PSSession : [] Processing data from remote server failed with the following error message: […]

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