Calendar Problems

How to Change Green Calendar Invitations Back to Blue in New Outlook

Partner Editor Oct 9, 2026 868 views

Question details

The user needs to revert the color of calendar invitations from green to blue in the New Outlook desktop application.

How to Change Green Calendar Invitations Back to Blue in New Outlook

Product: New Outlook
Device & OS: not provided
Scenario: Managing calendar events and visual preferences in the New Outlook desktop client.
Observed behavior: Calendar invitations are displaying as green in the desktop client, even though they correctly appear as blue in the Outlook web version.

Before you start

Ensure you are using the New Outlook desktop client and have your calendar tab open and synced before attempting to adjust the color settings.

Solution 1Recommended

Change the Calendar Color via the Three-Dot Menu

Use this method to quickly revert your calendar events and invitations to their default blue color directly from the calendar navigation pane.

In the New Outlook client, Microsoft assigns colors to calendars to help differentiate between multiple accounts. If an update or glitch changed your primary calendar to green, you can manually override it.

Open Calendar View

Launch the New Outlook desktop client and navigate to the Calendar view by clicking the Calendar icon located on the left sidebar.

Locate Your Calendar

In the left navigation pane under 'My calendars', find the specific account calendar where the invitations are currently appearing green.

Access Calendar Settings

Hover your mouse cursor over the calendar name. A three-dot menu (More options) will appear next to it; click on this menu.

Select the Blue Color

From the drop-down menu, choose 'Color' and select the default blue color (or any other preferred shade) to instantly apply it to your calendar invitations.

Change the Calendar Color via the Three-Dot Menu

Syncing changes: Once updated in the desktop client, the color synchronization will remain consistent across your app and should not affect the already correct web version.

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Frequently Asked Questions

Why did my Outlook calendar color suddenly change to green?

This typically occurs after a recent software update to the New Outlook client. The application sometimes resets or randomly assigns new default colors to different synced accounts to help differentiate between them.

Will changing the calendar color in the desktop client affect the Outlook web version?

Colors are largely synced across platforms. However, since your web version is already showing the correct blue color, updating the desktop app's local visual settings will simply align it with your web preferences.

Can I assign different colors to specific types of calendar invitations?

Yes, you can use the 'Categories' feature in Outlook to assign specific colors to individual events or types of appointments. Categorized colors will override the default calendar color you set.

Outlook & Email Problems