Microsoft is looking into a newly identified issue in classic Outlook that prevents users from opening certain encrypted ...

In the latest version of classic Outlook, users can't open encrypted emails. Microsoft confirms the issue and is investigating.

The problem happens for users who encrypt the email using the settings under the email File dialog (File > Encrypt), ...

Microsoft has confirmed a known issue that prevents recipients from opening encrypted emails in classic Outlook.

Abstract: The adoption of modern encryption protocols such as TLS 1.3 has significantly challenged traditional network traffic classification (NTC) methods. As a consequence, researchers are ...