The personal gmail calendar I added to Outlook is not syncing the busy events

Mark Salsbury 0 Reputation points
2026-10-30T16:08:15.72+00:00

I added my personal gmail to the outlook calendar as a personal account and turned on the "Include in my word availability" but it is not snycing with my outlook account.

Outlook | Web | Outlook.com | Calendar

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  1. AI answer

    2026-10-30T16:09:02.45+00:00

    Only events stored on the Gmail account’s primary calendar can affect your Outlook work availability; events on secondary, shared, or subscribed Google calendars are not included, even when Include personal events in my work or school availability is enabled.^1^

    Check the affected events

    1. Open the event in Google Calendar.
    2. Check which calendar owns it:
      • If it is on the primary calendar associated directly with your Gmail address, continue below.
      • If it is on another calendar under My calendars or Other calendars, move or copy it to the primary Gmail calendar. Outlook cannot incorporate secondary-calendar events into work availability.
    3. Ensure the event is marked Busy, Tentative, or Away, rather than Free.
    4. In Outlook on the web, open Calendar → Add calendar → Add personal calendars and leave Include personal events in my work or school availability enabled.
    5. Test from Scheduling Assistant, preferably by having another person in your organization check your availability. Personal event details remain private; Outlook should expose only the Busy, Tentative, or Away status.^1^

    If invited Google events are missing

    For events created from invitations, Google’s setting must allow invitations to appear on the calendar:

    1. Open Google Calendar → Settings → General.
    2. Find Automatically add invitations to my calendar.
    3. Select one of the Yes options.

    Microsoft identifies this setting as necessary for invited meetings to appear and be handled in Outlook.^2^

    If primary-calendar events still do not affect availability

    If a newly created Busy event on the primary Gmail calendar appears in Outlook but not in Scheduling Assistant, the supported personal-calendar integration is not functioning as documented. Similar Outlook on the web cases have reported connected Gmail accounts no longer contributing events or availability; the recommended escalation is Outlook on the web → Help → Contact Support.^3^

    Until it is resolved, the reliable workaround is to either:

    • Add your work address as a guest to each relevant Google event and accept it in Outlook, or
    • Create a corresponding Busy block directly on your work calendar.

    An iCal subscription can display the Gmail events, but subscribed events do not contribute to Scheduling Assistant availability.^3^

    References

    1. Show personal events on your work or school calendar | Microsoft Support
    2. Known issues syncing Google accounts to the Microsoft Cloud | Microsoft Support
    3. Google Calendar Syncing No Longer Working for Outlook on the Web? - Microsoft Q&A
    AI-generated content may be incorrect. Read our transparency notes for more information.

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  2. Vikki-T 13,230 Reputation points Microsoft External Staff Moderator
    2026-10-31T09:37:26.1933333+00:00

    Hi Mark Salsbury,

    To narrow this down, could you confirm whether the affected Gmail events are visible when you open the connected personal calendar in Outlook on the web?

    If the events are visible there but your work availability still remains free, try removing and reconnecting the personal calendar through Calendar > Add calendar > Add personal calendars. After reconnecting it, create a new test event directly on the primary Google calendar, mark it as Busy, and ask a colleague to check that time through Scheduling Assistant.

    If the test event appears in Outlook but still does not block your availability, this would suggest that the calendar connection is working but the free/busy information is not being processed correctly. In that case, please use Help > Support in Outlook on the web and include the time of the test event, as this may require Microsoft to review the synchronization information on the service side.

    You can also refer to Microsoft’s guidance here: Show personal events on your work or school calendar. Thank you so much for your understanding. 

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

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  3. Stefan Blom 357.1K Reputation points MVP Volunteer Moderator
    2026-10-31T13:09:54.73+00:00

    Did you import or subscribe to the calendar? See https://support.microsoft.com/en-us/outlook/import-or-subscribe-to-a-calendar-in-outlook-com-or-outlook-on-the-web.

    The article also states that synchronizing may take up to 24 hours.

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