Outlook 2019 – “The operation cannot be performed because the message has been changed.”

Written by James McDonald

August 19, 2020

Outlook 2019 account is IMAP

User keeps getting “The operation cannot be performed because the message has been changed.”

Their workflow involves getting an email in the inbox. Replying to it and then moving the email into another folder. They get an error message as follows (this picture was taken from a mobile phone)

“The operation cannot be performed because the message has been changed.”

In the following screen the solution is to go to File => Options => Mail and then uncheck “When a reply modifies a message, don’t move the original”

When a reply modifies a message, don’t move the original

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