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Office Settings & Configuration

Fix New Outlook Opening Another Window Instead of Minimized One

Tauseeq MagsiTauseeq Magsi Sep 27, 2026 869 views

Question details

The user is experiencing an issue where clicking the New Outlook taskbar icon launches a brand new window instead of restoring the already minimized application.

How to Stop New Outlook from Opening Multiple Windows When Minimized
Product
New Outlook
Device & OS
not provided
Scenario
Attempting to restore a minimized New Outlook application by clicking its taskbar shortcut.
Observed behavior
Instead of bringing the existing window back to the screen, New Outlook opens a separate window instance, leading to cluttered desktops and excessive energy notifications.
Before you start

Ensure you have updated New Outlook and Windows to the latest versions, as Microsoft frequently deploys patches to resolve overlapping window and taskbar grouping behaviors.

Solution 1Recommended

Disable the 'Hide When Minimized' Feature

Turning off this background tray feature forces Outlook to remain an active taskbar item, which often resolves the issue of new instances launching.

By default, Outlook has a feature that hides the active window from the taskbar when minimized, moving it entirely to the system tray. This can cause the main taskbar shortcut to trigger a new instance instead of recalling the hidden one.

1
Locate the System Tray Icon

Click the small up-arrow on your Windows taskbar (bottom right) to show hidden icons, and look for the New Outlook icon.

2
Access Icon Settings

Right-click the New Outlook icon in the system tray.

3
Disable the Setting

If there is a checkmark next to 'Hide When Minimized', click it to uncheck and disable the feature.

4
Verify Taskbar Behavior

Minimize your Outlook window and click the main taskbar icon to ensure it now correctly restores the existing window.

Disable the 'Hide When Minimized' Feature
Quick Tip: If you don't see the Outlook icon in the system tray, it may not be running in the background. Open Outlook first and check the tray again.
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Frequently Asked Questions

Why does New Outlook keep opening new windows instead of maximizing?

This is a known behavior tied to the 'Hide when minimized' setting and the way Windows handles pinned shortcuts for the new web-based architecture of New Outlook. Disabling the tray setting often resolves it.

Can I merge the multiple Outlook windows that have already opened?

No, New Outlook does not currently support merging separate window instances. You will need to manually close the extra windows by clicking the 'X' in the top right corner of each window.

Will reverting to Classic Outlook delete my emails or settings?

No. Switching back to Classic Outlook simply changes the user interface. All your emails, contacts, calendar events, and account settings are securely synced to your email provider.

How do I completely close New Outlook so it stops running in the background?

To fully exit the application, right-click the New Outlook icon in the system tray (the small hidden icons area on the right side of your taskbar) and select 'Quit' or 'Exit'.