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How to Fix Multiple Conflicting RSVP Notifications When Accepting Gmail Calendar Invites in Outlook (MacBook)

Neah Wishein Bañez 0 Reputation points
2026-04-24T16:19:11.47+00:00

My executive is experiencing an issue with calendar invites sent from Gmail. When he accepts an invitation—whether on his phone, Outlook web, or desktop app—the organizer (the Gmail sender) receives multiple notifications (sometimes 20 or more) showing different responses like “Accepted,” “Declined,” and “Tentative,” even though he only clicks “Accept” once.

To clarify, the meeting invites are created via Google Meet (Gmail), while my executive uses an Outlook account on a MacBook.

We’ve already tried several troubleshooting steps:

  • Turned off automatic responses to meeting requests
  • Removed me as a delegate (I’m his assistant)
  • Tested accepting invites via phone, Outlook web, and desktop app

However, the issue still persists.

We’re concerned because this creates confusion for the invitees and may come across as unprofessional. We’d like to find a way to resolve this problem.

Outlook | MacOS | New Outlook for Mac | For business
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  1. Steven-N 25,225 Reputation points Microsoft External Staff Moderator
    2026-04-25T14:02:13.7533333+00:00

    Hi Neah Wishein Bañez

    As far as I know, this behavior is caused by a known synchronization conflict, often referred to as a "calendar sync loop" or "meeting request storm." It typically occurs when an Exchange or Outlook account is integrated with the native Apple Calendar and Mail applications on iOS or macOS devices.

    Given this, you can try the below approaches to see if it help:

    Disconnect the Outlook account from native Apple apps:

    On the iPhone, navigate to Settings > Mail > Accounts (or Calendar > Accounts), select the Exchange/Outlook account, and toggle the Calendars sync off.

    On the MacBook, navigate to System Settings > Internet Accounts, select the account, and disable Calendar synchronization.

    Utilize official Microsoft applications:

    Transition the executive to exclusively using the official Microsoft Outlook application for iOS and the Outlook desktop application for macOS. These applications natively handle Exchange protocols and do not suffer from third-party synchronization loops.

    Modify Apple Mail settings (Mac):

    If the executive must continue using the Apple Mail application on macOS, open the Mail application, navigate to Settings > General, and change the "Add invitations to Calendar automatically" setting to "Never."

    Hope this help and kindly let me know for further support

    Best regards.

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