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

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

A new Microsoft-issued software patch for Outlook (Classic) on Windows 11 inadvertently broke encrypted email support - ...

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

Microsoft is investigating a known issue that triggers Outlook errors when opening encrypted emails sent from other organizations. According to a recently published support document, this issue ...