Microsoft Excel Send as email attachment opens old outlook

Phil Jones 40 Reputation points
2025-03-13T13:21:46.15+00:00

When I choose to send a file as an attachment in excel (or word for that matter), it opens up old Outlook, instead of Outlook (New)

I have tried to change the default app in settings but to no avail.

Any suggestions how to fix?

Outlook | Windows | Classic Outlook for Windows | For business
0 comments No comments
{count} votes

Accepted answer
  1. Faery Fu-MSFT 19,751 Reputation points Moderator
    2025-03-14T06:55:52.4466667+00:00

    Hi @Phil Jones ,

    Sorry for the inconvenience that happened to you.

    According to my research, if you attempt to share an attachment from Word, Excel as an attachment /PDF, the new Outlook will not work as expect. This is the known issue and will be fixed in future.

    Currently, the feature is in the "Rolling out" status for the New Outlook. This may not yet be available to all applicable customers.

    For your reference:

    Outlook: Sharing Word, Excel, and PowerPoint local files through the new Outlook for Windows

    User's image


    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have 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.

    1 person found this answer helpful.

1 additional answer

Sort by: Most helpful
  1. Dan Snyder 5 Reputation points
    2025-06-26T16:20:00.37+00:00

    We started having this issue as well and noticed that when the user is using New Outlook and chooses to share, the classic Outlook New Email window opens instead. For one of my users who reported this issue, we toggled back to Classic Outlook, tested then toggled back to New Outlook and the issue appears to be resolved.

    1 person found this answer helpful.

Your answer

Answers can be marked as Accepted Answers by the question author, which helps users to know the answer solved the author's problem.