"The properties of the message have been changed" prompt when forwarding/replying in Outlook

Anonymous
2021-05-21T21:28:23+00:00

When users open a message in its own window that has a pdf attachment and replies or forwards the message; when they close the original window, outlook prompts "The properties of the message <email_subject> have been changed. Want to save your changes to this message?"

Steps to recreate this issue:

  • Message must have pdf or txt attachment
  • Open the original message in its own window
  • Reply-to or forward the message
  • Closing original message that was previously opened in its own window

Attempts to disable add-ins or running outlook in safe-mode do not resolve this issue.

Outlook | Windows | Classic Outlook for Windows | For home

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Anonymous
2021-06-16T08:16:59+00:00

Hi All，

First, apologize for the inconvenience caused by this problem in Outlook Client. Microsoft has realized this issue and the dedicated outlook teams are working on this problem to fix it. It is a known issue in the current Outlook Clients, and a fix will be released to Office version 2106 on 2021/6/17. For the affected users please navigate to Outlook Web App as temporary workaround and wait for the new fix release with some more patience, thanks. For more details, please refer to "The properties of the message have been changed" prompt when forwarding/replying in Outlook.

Thanks for your understanding and patience.

Best Regards,

Oliver

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  1. Diane Poremsky MVP 17,526 Reputation points MVP Volunteer Moderator
    2021-05-26T17:37:12+00:00

    What addins are installed in both Outlook and Word?

    Try enabling the add properties to attachments to reply with changes option in the trust center, close the dialog, then reopen and disable it.

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  2. Anonymous
    2021-05-27T05:02:31+00:00

    Hello Sir,

    Many thanks for posting back. We had check this case with our consult team and to investigate this issue further, they requested for below information, so request you to please kindly provide it via Private Message.

    • One of the affected user account email id and Outlook troubleshooting logs from his end.
    • Your organization environment details (such as pure cloud, on premises, hybrid)

    Thank you so much for your co-operation.

    Regards,

    Ankita Vaidya

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  3. Anonymous
    2021-05-27T07:38:14+00:00

    I'm having the exact same issue with a few users.

    recreated the Outlook profile, recreated the user profile, tried Outlook in safe mode and always the same error message when forwarding or replying to messages.

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    2 people found this answer helpful.
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  4. Anonymous
    2021-05-27T07:42:22+00:00

    We also have this issue on multiple computers for Exchange 2016 lastest CU but its local to outlook installs, seemingly

    Microsoft® Outlook® 2019 MSO (16.0.13929.20360) 64-bit

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