When the reading pane is set to one side or hidden, it is not retained upon re-launch in Legacy Outlook for Mac

Last Updated: October 30, 2025

ISSUE

The reading pane settings are not saved in Legacy Outlook for Mac. Setting the reading pane to one side or hiding the reading pane resets after you restart Outlook. This issue occurs after updating to Outlook to 16.102.2 (25102623) Current, and 16.104 (25102631) Beta. 

STATUS: INVESTIGATING

The Outlook Team is investigating this issue. We will update this topic as soon as we have more information.

Additional Resources

Customize views in Outlook for Mac​​​​​​​

End of support for legacy Outlook for Mac

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See Also

Fixes or workarounds for recent issues in Outlook for Mac