Exchange 2013 Enable MAPI over HTTP BUG/ERROR on Server 2012 non R2

With the release of SP1 for Exchange 2013 there is a new feature introduced MAPI over HTTP

Doing some testing in my Demolab. I have 2 exchange 2013 servers with CU5 installed on server 2012 (No R2)

https://<fqdn>/mapi -IISAuthenticationMethods Negotiate

Set-OrganizationConfig -MapiHttpEnabled $true

I get the following error….
After Download & Install DotNet 4.5.2 but still not working… keep your informed!