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Exchange - Shared Mailbox Access (macmail)


Current May 2024

The documented procedure of signing in to a shared mailbox with an authorised user principal fails.

MacOS fails to display the option to sign-in as another user during the OAuth flow.

MacOS does not allow a username and password to be used to access more than one Exchange mailbox.


To access an Exchange shared mailbox from Mac Mail


1. Safari Advanced tracking and fingerprinting must be disabled during the OAuth flow for the procedure to work.

Safari > Settings > Advanced

Disable Use advanced tracking and fingerprinting protection.


2. Assign a password to the shared mailbox

Microsoft 365 Admin portal > Active Users > Reset password.


3. In Apple Mail, add a new Exchange account using the shared mailbox address and password.



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Article details
Article ID: 230
Category: Exchange
Date added: 17-05-2024 16:27:47
Views: 65
Rating (Votes): Article not rated yet (0)

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