how do i link teams and outlook calendars?

iain case 0 Reputation points
2026-09-16T15:52:46.5866667+00:00

teams and outlook calendars are not synchronized

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Microsoft Teams | Microsoft Teams for business | Calendar | Sync calendars
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  1. Demi Nguyen 2,165 Reputation points Independent Advisor
    2026-09-16T16:17:37.11+00:00

    Hello iain case,

    When Microsoft Teams and Outlook use the same Microsoft 365 work or school account, the calendar information should normally synchronize automatically. To help me better understand your setup, could you please confirm the following?

    1. Are Teams and Outlook signed in with the same email address?
    2. What type of account are you using, such as a Microsoft 365 work or school account, Outlook.com, Gmail, or Hotmail?
    3. Are appointments created in Outlook missing from Teams, or are appointments created in Teams missing from Outlook?
    4. Does the issue occur with all appointments or only certain appointments?
    5. Are you using Teams on the desktop, web, or mobile app?
    6. Does the calendar display correctly in Outlook on the web: https://outlook.office.com/?

    In the meantime, if you are using New Outlook, please try the following:

    • Confirm that the same Microsoft 365 account is signed in to both Outlook and Teams.
    • In New Outlook, go to Settings > Calendar > Events and invitations.
    • Select Add online meeting to all meetings.
    • Under the meeting provider, select Microsoft Teams, and then save the changes.

    User's image

    Please note that this setting adds a Teams meeting link to new events. It does not merge calendars belonging to different accounts.

    If the issue continues and you are using the Teams desktop app, please try these steps:

    • Fully sign out of both Teams and Outlook.
    • Close both applications completely.
    • Go to Windows Settings > Apps > Installed apps.
    • Find Microsoft Teams, select Advanced options, and try Repair first.
    • If Repair does not resolve the issue, return to the same page and select Reset.
    • Restart Teams and sign in again with the same account used in Outlook.

    User's image

    User's image

    You can also refer to the following Microsoft article for additional Teams client troubleshooting: Clear the Teams client cache - Microsoft Teams | Microsoft Learn

    Please also try the troubleshooting steps provided in the AI-generated answer in this thread and let me know the results.

    To help me investigate further, please provide the information requested above. If possible, please also share screenshots comparing the same date and appointments in the Teams and Outlook calendars. Before sharing the screenshots, please hide any sensitive or personal information.

    Kind regards,

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  2. AI answer

    2026-09-16T15:53:01.8966667+00:00

    To link Teams and Outlook calendars, the supported path depends on the account and mailbox setup:

    1. Sign in to both Teams and Outlook with the same Microsoft 365 work or school account.
    2. In Outlook, verify the Teams meeting integration is available:
      • Go to File > Options > Add-ins.
      • In Manage, select COM Add-ins > Go.
      • Make sure Microsoft Teams Meeting Add-in for Microsoft Office is enabled.
    3. Restart both Teams and Outlook after enabling the add-in.
    4. In new Outlook, go to Settings > Calendar > Events and invitations.
      • Turn on Add online meeting to all meetings.
      • Select the default meeting provider, if available.
    5. If using Teams Essentials with an existing third-party email/calendar system, automatic forwarding from Exchange Online must be enabled before calendar connection works:
      • In Microsoft 365 Defender, go to Email & collaboration > Policies & rules > Threat policies > Anti-spam.
      • Open Anti-spam outbound policy (Default).
      • Select Edit protection settings.
      • Under Forwarding rules, set automatic forwarding to On – forwarding is enabled.

    Important limitation:

    • If Outlook is using Office Standard 2016 without Exchange Online support, the Outlook calendar cannot sync with Teams.

    If the calendars still do not synchronize after the same-account check and add-in verification, the most likely issue is that the mailbox/calendar platform does not support the Teams calendar integration being used.

    AI-generated content may be incorrect. Read our transparency notes for more information.

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