"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

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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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. Anonymous
    2021-05-28T19:33:49+00:00

    Hey, I don't currently have access to a machine with the issue to test. I found a reddit that suggests rolling back to the semi-annual enterprise channel. You can use this command to roll back on a click to run version of office 2016 or later. Please let me know if this solves for you.

    "C:\Program Files\Common Files\microsoft shared\ClickToRun\officec2rclient.exe" /update user updatetoversion=16.0.12527.21912

    https://www.reddit.com/r/Outlook/comments/mlxmjw/the_properties_of_the_message_have_been_changed/

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    3 people found this answer helpful.
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  2. Anonymous
    2021-05-28T19:56:13+00:00

    I can confirm that this has resolved my issues so far on multiple machines across different environments. Hope this helps and good luck!

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  3. Anonymous
    2021-05-30T21:53:41+00:00

    Anyone know if MS has come out with an patch or fix for this besides rolling back?

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  4. Diane Poremsky MVP 17,526 Reputation points MVP Volunteer Moderator
    2021-05-31T02:49:25+00:00

    No, not yet. They are working on it but I don't have an ETA for the fix.

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