Outlook Calendar need linking iPhone with laptop

Add the same Outlook.com or Microsoft 365 account used on the laptop to Outlook for iPhone, then select that account’s calendar; POP and IMAP accounts synchronize email only, not calendars.^1^

Check the account and calendar on the iPhone

1. Open Outlook on the iPhone.
2. Tap your profile picture, then Settings.
3. Select Accounts, then select the account that should contain the appointments.
4. Confirm that its email address is the same account used for the calendar on the laptop.
5. Check the account type shown at the top:
   • Outlook.com, Microsoft 365, or Exchange: calendar synchronization is supported.
   • IMAP or POP: calendar synchronization is not supported; these account types synchronize email only.^2^
6. Return to Calendar in Outlook.
7. Tap the calendar icon or profile picture in the upper-left corner.
8. Under the correct email account, place a checkmark beside the calendar you want displayed.

Create a test appointment in that checked calendar—not under an iCloud, “On My iPhone,” or different account calendar—and check whether it appears on the laptop.

Reset the Outlook account

If the account is not POP or IMAP but still does not synchronize:

1. In Outlook for iPhone, open Settings.
2. Tap Accounts and select the affected account.
3. Tap Reset Account.
4. Reopen Outlook and check the calendar again.

Resetting the account is Microsoft’s documented next step for a supported account that is not synchronizing.^1^

Remove and re-add it if resetting does not work

Removing the account from Outlook on the iPhone does not delete appointments stored in the online mailbox, but verify that important appointments are visible from the laptop or Outlook on the web first.

1. Open Outlook → Settings → Accounts.
2. Select the affected account.
3. Tap Delete Account → Delete From This Device.
4. In Outlook, select Add Account, enter the same email address used on the laptop, and complete sign-in and any multifactor authentication prompts.^3^
5. Return to Calendar, open the calendar list, and checkmark the calendar under that account.

If setup prompts you to use IMAP or POP, the email provider cannot synchronize calendars through that configuration. Contact the provider or, for a work or school account, the Microsoft 365 administrator.

If the laptop appointments remain missing

Check where those appointments are stored in laptop Outlook. They must be in the calendar belonging to the same online account added to the iPhone. Appointments stored in another account or a separate local calendar will not automatically appear in that account’s iPhone calendar.

For a Microsoft 365 work or school account, contact the organization’s administrator if the account cannot be added or synchronization remains blocked. For Outlook.com or the Outlook mobile app, use Outlook for iPhone’s Settings → Help & Feedback → Contact Support escalation option.^3^

References

1. [Outlook app](https://support.microsoft.com/outlook/can-t-sync-calendar-and-contacts-with-my-phone-or-tablet)
2. Troubleshoot Outlook mobile issues | Microsoft Support
3. Set up the Outlook app for iOS | Microsoft Support