Title: Legacy Outlook for Mac users may be unable to connect to their Exchange Online mailboxes
User impact: Legacy Outlook for Mac users may be unable to connect to their Exchange Online mailboxes.
Current status: We’re finishing the final internal validations before the additional fix begins deployment, and anticipate deployment to begin by our next scheduled update.
Scope of impact: Users on the legacy Outlook for Mac client attempting to access their Exchange Online mailboxes may be impacted.
Start time: Friday, March 15, 2024, at 8:00 AM UTC
Root cause: A recent service maintenance change introduced a code issue that inhibits communication between legacy Outlook for Mac users and the Exchange Online service, which is resulting in the impact.
Next update by: Monday, March 25, 2024, at 7:30 PM UTC
