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Yahyati's avatar
Yahyati
Brass Contributor
Feb 25, 2026

The outlook window shrinks each time you open it

Under Windows, when you launch software, it is displayed with exactly the same window size. It's been like this forever.
 
In my current and apparently recent version of Outlook, for some time now I have had something completely different: whether I close it completely or just reduce it, the size of the window has decreased significantly the next time I open it. I didn't have this before. I tested by closing and opening several times in a row: the window narrows each time and it ends with a square of 9cm on each side. Depending on the manipulations, the size reduction can be faster but still there.
 
So I have to constantly re-enlarge the window if I want to be able to read my messages or other things. I couldn't find any options in the menus that would fix this and I can't log into my Microsoft account because of the crazy security. In any case, even without a connection in the searches I did which brought me results on the support site yielded nothing.
 
I did a repair on Outlook which didn't solve anything. I'm looking for other avenues.

4 Replies

  • Sawyeryo's avatar
    Sawyeryo
    Iron Contributor

    Sometimes, Outlook remembers the last window size and position. Ensure you haven't accidentally changed the window size manually to a very small dimension.

  • Ahmados's avatar
    Ahmados
    Copper Contributor

    Update your graphics driver via Device Manager or the manufacturer's site. Ensure your Windows system is fully up to date.

  • Kyreer's avatar
    Kyreer
    Brass Contributor

    The issue you're experiencing with Outlook window size decreasing each time you close and reopen it is unusual and can be caused by several factors, such as display settings, registry issues, or corrupted Outlook profiles. Since you mentioned that this behavior is recent and persists across multiple sessions.

  • Amiasop's avatar
    Amiasop
    Brass Contributor

    Outlook sometimes saves window size and position settings in its configuration files or registry. If these get corrupted, the window may not retain size preferences.