How to connect to exchange Activesync service

i have exchange server 2016 on windows server 2012,
and outlook anywhere working through autodiscovery  works well, As shown in attached file 001file 001 ,
but when try to connect to exchange activesync service file 002  i get this error As shown in attached file 003file 003 ,
whats the best solution we can connect  ctivesync service.
Ehab GhanemITAsked:
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timgreen7077Exchange EngineerCommented:
Activesync is for mobile devices, but your screen shots look like you are connecting via a PC. is the for the mobile device connectivity, or you can use the native email app on the mobile devices. If you are using your computer as the screen shots suggests, that is why the activesync connectivity is failing.

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MAS (MVE)EE Solution Guide - Technical Dept HeadCommented:
Hi Ehab,
Outlook2016 does not support this method to connect to Exchange 2016.
Please check this for more details
yo_beeDirector of Information TechnologyCommented:
You may have a internal DNS issue.  See if you can ping your active URL from the computer.  You may have firewall blocking ping response, but if it resolves the correct IP then it is not a DNS issue.
MAS (MVE)EE Solution Guide - Technical Dept HeadCommented:
Please try to configure activesync on a mobile. If it doesnt configure autoamtic please check this .
Todd NelsonSystems EngineerCommented:
The native Windows 10 mail app would support EAS connections to Exchange but the Outlook client will not--this is by design.  If Outlook, the native connection required is RPC/HTTP or MAPI/HTTP.  MAPI/HTTP has been the new standard--beginning with Exchange 2013.
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