Many users report the error message “The operation cannot be performed because the message has been changed” on Outlook while connecting to Microsoft Office 365 Office 2021, Office 2019, When we receive an error message while sending or opening an email in Microsoft Outlook on web, see the cause and understand how to fix it.
The messages affected shows that the Outlook automatically saved a draft while editing them. If you create a new message type quickly, and send it before it is saved as drafts the message will be send. However, If you take time to compose the message and Outlook it will be saved in draft, the message.
The message that Outlook thinks has changed is the one in the drafts folder, and the send fails because it cannot delete the draft as part of the send operation. This Error message “The operation cannot be performed because the message has been changed” applies to all versions of windows like Windows 11, 10, Windows 8 & 8.1, and Windows 7.
This error “The operation cannot be performed because the message has been changed” message generally pops up, when there is
The problem is a new bug in the recent Office update, and no amount of restarting, reinstalling, or repairing will fix it, so don’t waste your time pursuing those options.
The only workaround is to
You need to restart your computer after the repair is complete. If the “The operation cannot be performed because the message has been changed” issue still persists you need to uninstall the office and re-install. Type the product key and click on Setup. It will ask you to log in to your Microsoft account. However, if you are unable to fix the Office issue after all the steps. We would like to provide with you an alternative way to install/repair Office. If you need further assistance in performing the proposed actions, please don’t hesitate to chat with our Technical experts.
If you are still not able to resolve this error message, chat with our experts will provide you with the best solutions and techniques to be followed to resolve this error message completely. You can also visit our website for more details.
More details for this method at https://support.microsoft.com/en-us/help/929135/how-to-perform-a-clean-boot-in-windows