Title: FIX: New Outlook for Mac Custom Work Week (Sunday) Empty / No Meetings Bug

AmitBarr-8770 0 Reputation points
2026-09-08T12:38:34.2+00:00

The Problem: If you change your work week in New Outlook for Mac to a custom schedule (e.g., adding Sunday as a working day and removing Friday) on the Monthly Enterprise Channel (MEC), a critical grid-rendering bug can occur. Sunday appears in the "Work Week" view, but it shows up completely empty with no meetings. Furthermore, the Sunday column acts like a "dead zone" where clicking "New Event" or clicking into a time slot does absolutely nothing—even though the meetings show up perfectly fine in the standard 7-day "Week" or "Day" views.

Clearing local caches, re-indexing, or wiping app profile container data does not resolve this, as it is a layout indexing mismatch between the server and the Mac New Outlook client.

The Solution / Fix:

You can force the backend server and the local UI engine to re-align and permanently fix the grid layout by toggling the Outlook interface mode:

  1. Revert to Legacy Outlook: In Outlook for Mac, go to the top Apple menu bar, click on Help, and select Revert to Legacy Outlook.
  2. Verify Layout: Let the application reload the classic interface. Check your calendar—your Sunday meetings will immediately display correctly, and the time slots will become fully interactive.
  3. Switch Back to New Outlook: Once the legacy calendar finishes its sync, click the Help menu again (or toggle the New Outlook switch in the top-right corner) to return to the modern interface.

Why this works: Toggling the app back to the legacy architecture forces Microsoft Exchange to rewrite your custom calendar day-mapping layout profile. When you toggle back to New Outlook, the client is forced to fetch the freshly corrected server-side profile, permanently fixing the Sunday "dead zone" bug.

Outlook | MacOS | New Outlook for Mac | For business

Locked Question. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

0 comments No comments

1 answer

Sort by: Oldest
  1. AmitBarr-8770 0 Reputation points
    2026-09-08T12:39:13.19+00:00

    The Solution / Fix:

    You can force the backend server and the local UI engine to re-align and permanently fix the grid layout by toggling the Outlook interface mode:

    1. Revert to Legacy Outlook: In Outlook for Mac, go to the top Apple menu bar, click on Help, and select Revert to Legacy Outlook.
    2. Verify Layout: Let the application reload the classic interface. Check your calendar—your Sunday meetings will immediately display correctly, and the time slots will become fully interactive.
    3. Switch Back to New Outlook: Once the legacy calendar finishes its sync, click the Help menu again (or toggle the New Outlook switch in the top-right corner) to return to the modern interface.

    Why this works: Toggling the app back to the legacy architecture forces Microsoft Exchange to rewrite your custom calendar day-mapping layout profile. When you toggle back to New Outlook, the client is forced to fetch the freshly corrected server-side profile, permanently fixing the Sunday "dead zone" bug.

    Was this answer helpful?

    0 comments No comments