10/01/2026
If you are using Apple Mail on a Mac for your Microsoft account, you should make the switch to Outlook or another mail program sooner than later.
This is a 'phased' roll-out so some will stop working right away and others over the next few months.
The last time Apple did this, there was NO ERROR message or warning to users, the service just stopped working and people wasted a lot of time trying to solve.
Microsoft today began disabling Exchange Web Services (EWS) by default in Exchange Online, which will cut off the protocol that Apple's Mail and Calendar apps on Mac still rely on to sync Microsoft 365 work accounts. The cutoff has been on the cards for a fairly long time, as Microsoft stopped addin...