How to Set Outlook to Use a Specific Account for Calendar by Default

When you have multiple email accounts configured in Outlook, the Calendar app may not always open with the calendar you want to see first. By default, Outlook selects the calendar from the account that was added first or the one designated as the primary Exchange account. This can be frustrating when you need to see your work calendar first but Outlook defaults to a personal account. This article explains how to change the default calendar account in Outlook for Windows and Outlook on the web so you always see the right schedule first.

Why Outlook Opens the Wrong Calendar First

Outlook determines the default calendar based on the account order in your profile. The account listed first in the navigation pane or in the account settings is treated as the primary account for calendar, contacts, and tasks. If you added a personal Outlook.com account before your work Exchange account, that personal calendar becomes the default. The same logic applies to Outlook on the web, where the default calendar is the one you last set manually or the first calendar that was created in your mailbox.

There is no single global setting that says “always use this account for calendar.” Instead, the default is controlled by account priority in the profile. Changing the default calendar requires either reordering accounts or, in some Outlook versions, directly specifying a default calendar.

Steps to Set the Default Calendar Account in Outlook for Windows

The following steps work for Outlook 2016, 2019, 2021, and Outlook for Microsoft 365 on Windows 10 and Windows 11.

1. Open Account Settings
   In Outlook, go to File in the ribbon menu. Click Account Settings and then select Account Settings again from the dropdown menu.
2. Select the Email Tab
   In the Account Settings dialog, click the Email tab if it is not already active. This tab lists all email accounts configured in your Outlook profile.
3. Change Account Order
   Select the account you want to be the default for calendar. Use the Move Up or Move Down buttons on the right side of the dialog to move that account to the top of the list. The account at the top becomes the primary account and its calendar will open by default.
4. Apply and Restart
   Click Apply and then OK. Close Outlook completely and reopen it. The Calendar view should now open with the calendar from the account you moved to the top.

If the calendar still does not show the correct account, check that the account you moved to the top is an Exchange account or an account that supports calendar sharing. POP3 and IMAP accounts may not have a full calendar feature in Outlook.

Set Default Calendar in Outlook on the Web (OWA)

For Outlook on the web, the process is different because account order is not configurable. Instead, you set a default calendar directly.

1. Open Calendar
   Sign in to Outlook on the web (outlook.office.com) and click the Calendar icon in the navigation pane on the left.
2. Go to Settings
   Click the gear icon in the top-right corner of the page. In the Settings panel that opens, click View all Outlook settings at the bottom.
3. Select Calendar Settings
   In the Settings window, click Calendar in the left pane, then click General and select Calendar again from the submenu.
4. Choose Default Calendar
   Under the Default calendar dropdown, select the calendar you want to appear first. Click Save at the top of the settings panel. The change takes effect immediately.

What to Do If the Default Calendar Does Not Change

In some cases, the default calendar setting may not apply correctly due to cached data or group policy restrictions. The following sections address the most common problems.

Outlook Still Opens the Wrong Calendar After Reordering Accounts

If you moved an account to the top but the Calendar view still shows a different account, Outlook may be using a cached view. Close Outlook, open the Control Panel, and go to Mail (32-bit) or Mail. Click Show Profiles, select your profile, and click Properties. Under Email Accounts, verify the account order matches what you set in Outlook. If not, reorder there and restart Outlook.

Default Calendar Option Is Grayed Out in Outlook on the Web

This happens when your account is managed by an organization that enforces a default calendar via group policy or Exchange ActiveSync policies. Contact your IT administrator to request a change. If you have a personal Outlook.com account, this setting is always available.

POP3 or IMAP Account Shows No Calendar

POP3 and IMAP accounts in Outlook do not have a native calendar. If you need to use a calendar with such an account, you must add an iCloud, Google, or other calendar via the Open Calendar > From Internet option. These calendars cannot be set as the default calendar in Outlook. The default will remain the primary Exchange or Outlook.com account.

Item	Outlook for Windows	Outlook on the Web
Default calendar method	Account order in profile	Explicit default calendar setting
Where to change	File > Account Settings > Email tab	Settings > Calendar > General > Default calendar
Supports multiple accounts	Yes	Yes
Effect on other folders	Changes default for contacts and tasks as well	Changes calendar only

You can now control which calendar opens first in Outlook by reordering accounts in the Windows desktop app or by setting a default calendar in Outlook on the web. After applying the change, test by pressing Ctrl+2 to switch to Calendar view. For advanced users, consider creating a separate Outlook profile for each calendar set if you frequently switch between distinct work and personal schedules.