"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
    2021-06-04T12:50:33+00:00

    Agreed, I tested:

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

    On my computer. It fixed it for a single reply, then broke again.

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  2. Anonymous
    2021-06-04T14:03:26+00:00

    So far it appears to be working.

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  3. Anonymous
    2021-06-04T14:20:33+00:00

    I have the same issue with an user. :/

    I have tried everything except the registry keys, just found this, I will try it next.

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  4. Anonymous
    2021-06-04T14:46:12+00:00

    I wonder if this issue is related to the exchange version being used. Even if it is not 1:1 every user on a particular exchange version, it might be that it only occurs on certain versions. I am using Exchange 2013 shared on UK Fast. Can others experiencing this problem post their server versions please.

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