The problem happens for users who encrypt the email using the settings under the email File dialog (File > Encrypt), ...
In the latest version of classic Outlook, users can't open encrypted emails. Microsoft confirms the issue and is investigating.
You may see this error because the Microsoft 365 encryption service cannot verify your identity or check if you have permission to view the message. This is not ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback