can't create new message in Outlook app on Mac when trying to reply from shared mailbox as sender

Vit Kral 15 Reputation points


when trying to reply on email from shared mailbox added to my Outlook app on Mac, I'm getting "Can't create new message" error.
I have to switch sender to my personal e-mail which works fine.
I saw this issue was reported and had something to do with signature, but happens if I use signature and also if I use no signature.

Thanks in advance.

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.
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  1. Faery Fu-MSFT 17,386 Reputation points Microsoft Vendor

    Hi @Vit Kral ,

    Based on my test, when I reply to the email, I choose to reply from the shared mailbox, and it can be sent successfully.

    In order to confirm whether it is related to the client, log in to the web version and check whether it can be sent successfully. If yes, remove the shared mailbox on the client and add it again to see if the problem continues. Refer to the steps in this article: Open a shared Mail, Calendar or People folder in Outlook for Mac

    Also, according to the known issues in the official documentation, the Reply button does not work as expected, please install Office 16.65.22091101 update or later. Follow the steps documented in Update Office for Mac automatically to install the update. Capture

    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.

  2. DAVID DELACROIX 0 Reputation points

    Same problem, answer above is just a lost of time.
    How come Miscrosoft is not properly testing it product ... unbelievable such lost of time and we pay for it! Screenshot 2023-05-04 at 16.52.12

  3. 55259657 0 Reputation points

    Same issue. When I try to send a new email from the new Outlook for Mac client, I always get the "Can't Create New Email" message, so I have to keep reverting to the legacy version of Outlook. No obvious solve.

    0 comments No comments

  4. Jim Clark 0 Reputation points

    Same issue here. I believe it's coming from the IMAP accounts.

    0 comments No comments