User level: Level 1 (42 points)Hi,
I can’t connect to my MS Exchange mailbox for few days. An unsupported Graph API and EWS deprecation would be the reason. Do you have any idea when this protocol would be added to MacOS ?
By waiting, I must use Outlook as the only supported solution for mail, calendar, … 😞
Thank you
Posted on Oct 5, 2026 6:14 AM
User level: Level 10 (242,520 points)Oct 5, 2026 4:09 PM in response to WatchUp
Indeed, with the retirement of the traditional Microsoft Exchange Web Services protocols by Microsoft in favor of the newer Graph Api protocol only, Apple Mail can no longer access Outlook and Exchange based accounts.
Until Apple updates the Mail app to support the newer Graph Api, there's unfortunately not much that can be done.
You can downlod the newer Outlook for Mac app from the app Store and use that to access Exchange email accounts while we wait for Apple to implement Graph API into the Mail app.
User level: Level 10 (205,348 points)Oct 5, 2026 3:31 PM in response to WatchUp
WatchUp wrote:
I think the issue is more on Apple’s side. The end of support for EWS is announced for several years, replaced by Graph API. Unfortunately, the update has not been made in Mail & Calendar yet. I hoped someone could tell me more about the integration of this new protocol in Mail & Calendar…
Is that what Microsoft support told you, or their help site.
IF this is work account contact your IT administrator.
User level: Level 1 (90 points)Oct 14, 2026 2:37 PM in response to WatchUp
It seems that Microsoft has not finished Graph: https://learn.microsoft.com/en-gb/exchange/clients-and-mobile-in-exchange-online/deprecation-of-ews-exchange-online#roadmap-for-parity-gaps
But if this is the case, how is new Outlook running? Does it not do the things on the parity gap list? I haven't tried it. My organization changed a setting and Mail is working again for me, for now.
User level: Level 10 (205,348 points)Oct 5, 2026 9:01 AM in response to WatchUp
WatchUp wrote:
Hi,
I can’t connect to my MS Exchange mailbox for few days. An unsupported Graph API and EWS deprecation would be the reason. Do you have any idea when this protocol would be added to MacOS ?
By waiting, I must use Outlook as the only supported solution for mail, calendar, … 😞
Thank you
You can contact Microsoft support or look at their help site to resolve your issue.
User level: Level 1 (42 points)Oct 5, 2026 12:21 PM in response to razmee209
I think the issue is more on Apple’s side. The end of support for EWS is announced for several years, replaced by Graph API. Unfortunately, the update has not been made in Mail & Calendar yet. I hoped someone could tell me more about the integration of this new protocol in Mail & Calendar…
Originally posted at discussions.apple.com/thread/256370773