Recently (last week) our Exchange Certificate expired on our server, the prvious technician had created a new one and emailed everyone a .pfx file so that they could install it on each of their clients.
Question is now, how do I go about doing this, I know I will need to use the exchange management shell but its been a long time for me on exchange.
Also of one other note, All mobile device have stopped working as well? Is this due to the certificate or something else? I didn't think a Self Assigned Certificate worked with Active Sync to begin with?
Attached is a screenshot from users computers.