I am unable to send new meeting invitation from my outlook web app on Mac.

Anonymous
2026-01-05T14:22:40.2866667+00:00

After adding invitees, location etc on New Event window as soon as I hit send on outlook web app I get the error "Something went wrong. We couldn't send your calendar invite. Waiting a bit might help...."

I have to use outlook web app because I have 2 outlook accounts and can't add both of them to desktop app. I am able to send emails through web app. And the Outlook desktop app is working as expected.

Have restarted the system, re-signed in, cleared cache, tried multiple browsers and incognito mode but nothing helped.

Outlook | Web | Outlook on the web for business | Email
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  1. Ruby-N 13,325 Reputation points Microsoft External Staff Moderator
    2026-01-05T17:27:39.06+00:00

    Dear @Jaiswal Anupriya X, 

    Thank you for posting your question in the Microsoft Q&A forum.   

    I understand how inconvenient it is to receive the message “Something went wrong. We couldn’t send your calendar invite. Waiting a bit might help…” when trying to send a meeting invitation in Outlook on the Web, especially since email sending still works and the desktop Outlook client behaves normally. 

    As you have already tried the key troubleshooting steps for your browser and Outlook on the web, I’ve thoroughly reviewed the details you provided and conducted an investigation on our end. 

    There is an ongoing service incident affecting Exchange Online across multiple platforms, including Outlook on the web, which aligns with the behavior you’ve reported. 

    • Email delivery relies primarily on basic mailbox functions and SMTP or TLS, which are not directly affected by this incident.  
    • However, meeting invitations depend on Exchange Calendar services and certain Microsoft 365 Groups or Graph permissions. These components can be impacted when configurations such as SecurityEnabled are set to False, which can contribute to the issue you are seeing. 

     

    The developer team is aware of this issue and is actively working on a resolution to roll out a fix as soon as possible. For further details, please review this incident report in the Service health menu in Microsoft 365 admin center. 

    Note: Only IT administrators have access to the Microsoft 365 admin center to view additional details. 

    User's image 

    To ensure a deeper and more precise investigation, I recommend reaching out to your organization’s IT administrator so they can contact Microsoft Support. 

    A technical support engineer can perform a remote session to investigate the situation, verify the backend configurations, and run any necessary synchronization tools to resolve the problem. If the issue requires further attention, they can escalate it to a specialized team for deeper analysis.     

    • I sincerely recommend reaching out to your IT administrator to create a support ticket via Microsoft Admin Center > Support > Help & Support for further investigation.  

    User's image 

    As community moderators, we kindly ask for your understanding that our access to internal development details is limited. Our primary role is to guide users toward the appropriate resources and support channels. While we may not have visibility into performing deeper backend analysis, we’ll continue doing our best to support you within the scope of our responsibilities.   

    If you have any additional questions or further information to share, please don’t hesitate to let me know.  

    Thank you for your patience and understanding. 

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

    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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  2. AI answer

    2026-01-05T14:23:50.98+00:00

    It seems that you are experiencing issues sending calendar invites through the Outlook web app on your Mac. Since you have already tried several troubleshooting steps like restarting your system, re-signing in, clearing the cache, and using different browsers, here are a few additional suggestions:

    1. Check Internet Connection: Ensure that your internet connection is stable, as connectivity issues can cause problems when sending invites.
    2. Browser Extensions: Sometimes, browser extensions can interfere with web applications. Try disabling any extensions or using a different browser without extensions.
    3. Update Browser: Make sure your web browser is up to date, as outdated versions can lead to compatibility issues.
    4. Try a Different Network: If possible, switch to a different network to rule out any network-related issues.
    5. Contact Support: If the issue persists, consider reaching out to Microsoft support for further assistance, as there may be a specific issue with your account or the service itself.

    If you continue to face this issue, it might be worth checking if there are any known outages or service disruptions affecting Outlook services.

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

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