Encrypted emails in Microsoft’s older email client—called “classic Outlook” as opposed to “new Outlook”—have once again ...

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

There is no fix available, but you can always revert to an older version.

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 ...