\uD83E\uDD14 Problem
Exchange Folder Agent is unable to connect. There is a connection timeout.
\uD83C\uDF31 Solution
Try opening the Exchange EWS URL in a brower. If it shows only after a very long time, the server may be unable to check certificate revocation lists (CRL) on the internet.
There are two solutions for this:
Make sure that certification revocation lists can be accessed on the internet.
Disable certificate revocation checks.
In Internet Explorer, go to Settings > Advanced.
Disable the setting “Check for publisher’s certificate revocation”.
Disable the setting “Check for server certificate revocation”.
Disabling certificate revocation checks is a security risk, because it will no longer be possible to prevent connections to servers with revoked certificates.