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

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

Classic Outlook tells you to open the email to "read its contents and verify your credentials," but that doesn't work.

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

A new Outlook (Classic) update is preventing Windows users from opening encrypted emails. Microsoft confirms the bug and ...

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

In today’s digital landscape, email encryption has become a critical component of safeguarding sensitive information and maintaining secure communication channels. Microsoft 365 offers a comprehensive ...