Microsoft Exchange Agents cannot be installed

Issue encountered

After installing GFI MailEssentials on Microsoft Exchange 2013 with Service Pack 1, the Exchange agents for GFI MailEssentials cannot be installed.

Cause

Microsoft released a patch for this issue, that was later incorporated into the cumulative updates. For further information see https://support.microsoft.com/en-us/help/2938053/third-party-transport-agents-cannot-be-loaded-correctly-in-exchange-server-2013

Solution

GFI MailEssentials fully supports Microsoft Exchange 2013 SP1. However, the latest cumulative update is required to avoid issues with the installation of Exchange agents.

For more information see https://technet.microsoft.com/en-us/library/jj983803(v=exchg.150).aspx