Forum Discussion

Steel Contributor

Oct 03, 2018

Outlook <-> Exchange Protocols

During Ignite I saw a presentation that suggested Outlook was moving to a new communication protocol "Hx" from the current REST API method (Mobile) and MAPI/HTTP (Desktop) I was surprised to hear th...

MVP

Nov 15, 2018

But the documentation (and the FAQ) have been updated with actual details:

https://docs.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/outlook-for-ios-and-android/outlook-for-ios-and-android

I've asked them to clarify on the questions asked in this thread as well.

VasilMichev

MVP

Nov 15, 2018

Here's a link to the FAQ as well: https://docs.microsoft.com/en-us/exchange/clients-and-mobile-in-exchange-online/outlook-for-ios-and-android/outlook-for-ios-and-android-faq#native-microsoft-sync-technology-migration

Adrian Hyde
Steel Contributor
Nov 28, 2018
This is good info VasilMichev - can you ping your contacts once more and see if they have an answer on if/when Outlook for Desktop is planning to also adopt this approach - or if it plans to remain on its own protocol stack. (and if so, why)
I also noticed that one of the docs says Outlook for Mac is also going to align to this protocol, but there is nothing in the FAQ's explaining the transition like we see with the mobile Outlook clients.
- Ross Smith IV
  Former Employee
  Nov 28, 2018
  Outlook desktop will continue to use the MAPI/HTTP protocol.
  
  We haven't announced the transition date for Outlook for Mac. Stay tuned.
  - Adrian Hyde
    Steel Contributor
    Nov 28, 2018
    Hi Ross Smith IV - do you happen to know what the reasoning behind why Outlook Desktop will remain different?
- VasilMichev
  MVP
  Nov 28, 2018
  Asked, will let you know once I get an answer.