"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. Anonymous
    2021-06-09T14:07:06+00:00

    Hi all,

    We escalated this issue to the Outlook Team and the root cause has been found. The bug is specific to Outlook Desktop and the fix will be in an upcoming update. The build that is going out today does not have the fix (Current Channel 2105 14026.20270). I expect the fix will be in the next major update after this. Once I know for sure the version of the fix and the estimated release date I will report back. I should have a better status update later today.

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  2. Anonymous
    2021-06-02T16:12:51+00:00

    Close outlook and delete entries in your registry HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Common\ExperimentConfigs\Ecs\outlook\ConfigContextData

    Problem solved

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  3. Anonymous
    2021-05-27T17:08:25+00:00

    For mine, all add ins were disabled and Outlook safe mode does not resolve.

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  4. Anonymous
    2021-05-27T15:21:13+00:00

    Hello All,

    I have the same issue and it appears there is no solution yet.

    I have run a Quick Repair, Online repair, followed all advice in this thread, run SARA, Revo...all to no avail.

    Microsoft, when will you have a resolution?

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