MAILTO Protocol in default Apps not working for Outlook

Anonymous
2025-01-09T09:02:43+00:00

To whom it may concern. Our customer is using Windows 11 with Microsoft 365 Office Current Channel v2411 build 18227.201162.

When we try to send a Microsoft Word document by selecting > Share > Email send as Attachment

I get the message - "Either there is no default mail. Please run Microsoft Outlook and set it as the default mail client".

Outlook is already set as a default client in the default Apps option and the default applications by the protocol are already set as MAILTO Protocol in the default Apps option to Outlook (new). Please assist.

Microsoft 365 and Office | Word | For business | Windows

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Doug Robbins - MVP - Office Apps and Services 323.7K Reputation points MVP Volunteer Moderator
2025-01-13T07:24:51+00:00

The “New Outlook is just a re-badged version of Windows Mail and like its predecessor, it is not MAPI compliant and cannot be used to send messages from any of the other Office applications (Access, Excel, Word).

The Outlook Product Team have advised that there are no plans to add MAPI compliance to the "New Outlook", which I suspect is because it is not possible to do so.

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  1. Anonymous
    2025-01-13T08:24:41+00:00

    Hi Suzanne. Thank you for replying.

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  2. Anonymous
    2025-01-13T08:23:01+00:00

    Hi Diane. Thank you for responding. No, it did not work. Doug had already given me the answer I was looking for.

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