Calendar invites not sending and duplicates invite

K_Hege90 1 Reputation point

My Outlook is automatically duplicating calendar invites and not sending to attendees. One looks like it completely send, but obviously no one responds because they didn't receive. The other has no attendees listed and displays this message. 260999-image.png

Happens every time I send an invite.

Office Mac
Office Mac
Office: A suite of Microsoft productivity software that supports common business tasks, including word processing, email, presentations, and data management and analysis.Mac: A family of Apple personal computers that run the macOS operating system.
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Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
3,997 questions
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  1. Faery Fu-MSFT 9,071 Reputation points Microsoft Vendor

    Hi @K_Hege90 ,

    What type of account are you using? Is it an IMAP or Exchange account?

    Do you have sync and access your mailbox and/or calendar on multiple mobile devices? If so, you should start with disabling all the syncs that have been set up, create a new meeting item and see if the issue continues.

    If you are running antivirus software, it is recommended that you turn it off temporarily, and if you do not create duplicates after sending the invitation, you will need to uninstall or close it while sending the invitation.

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
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